Quick view Details TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* MSRP: Now: $389.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V MSRP: Now: $374.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR MSRP: Now: $239.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* MSRP: Now: $14.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 MSRP: Now: $124.95 Out of stock Compare Quick view Details NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES MSRP: Now: $124.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT MSRP: Now: $179.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V MSRP: Now: $374.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR MSRP: Now: $239.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* MSRP: Now: $14.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 MSRP: Now: $124.95 Out of stock Compare Quick view Details NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES MSRP: Now: $124.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT MSRP: Now: $179.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR MSRP: Now: $239.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* MSRP: Now: $14.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 MSRP: Now: $124.95 Out of stock Compare Quick view Details NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES MSRP: Now: $124.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT MSRP: Now: $179.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* MSRP: Now: $14.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 MSRP: Now: $124.95 Out of stock Compare Quick view Details NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES MSRP: Now: $124.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT MSRP: Now: $179.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 MSRP: Now: $124.95 Out of stock Compare Quick view Details NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES MSRP: Now: $124.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT MSRP: Now: $179.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES MSRP: Now: $124.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT MSRP: Now: $179.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT MSRP: Now: $179.95 Add to Cart Compare Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS MSRP: Now: $339.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* MSRP: Now: $799.95 Add to Cart Compare Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* MSRP: Now: $729.95 Add to Cart Compare Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON MSRP: Now: $549.95 Out of stock Compare Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A MSRP: Now: $109.95 Out of stock Compare Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view TAIDA | sku: GY6-06057-63-75c-4V TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 4V *4 VALVE* TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) 4 VALVE *4V* LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm... MSRP: Now: $389.95 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view TAIDA | sku: GY6-06057-63-75c TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm FORGED DOME PISTON (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm FORGED FLAT PISTON (57mm SPACING) LIQUID COOLED 232cc TAIDA CERAMIC CYLINDER WITH FORGED ALUMINUM PISTON OFFER BETTER DURABILITY AND REDUCED FRICTION FOR 57mm B-BLOCK GY6 ENGINES... MSRP: Now: $374.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view TAIDA | sku: GY6-01057-67c TAIDA 204cc GY6 CYLINDER SET WITH 67mm CAST FLAT PISTON (57mm STUD SPACING) POLARIS RAZOR TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* CAST FLAT... MSRP: Now: $239.95 Add to Cart Compare Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view NARAKU | sku: 137-28 NARAKU CYLINDER GASKET SET *52.4mm* NARAKU REPLACEMENT GASKET SET FOR QMB139 4-STROKE 52.4mm BIG BORE CYLINDER AND HEAD KIT. *PACKAGING AND NON-METAL GASKETS MAY VARY IN APPEARANCE FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO,... MSRP: Now: $14.95 Add to Cart Compare Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view NARAKU | sku: 137-13 NARAKU CYLINDER UPGRADE KIT (72cc, IRON, 47mm BORE) FOR QMB139 NARAKU 72cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE UPGRADES TO 72cc CYLINDER BORE: 47mm CYLINDER SLEEVE OUTER DIAMETER: 53.1mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34... MSRP: Now: $124.95 Out of stock Compare Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view NCY | sku: 1100-1248 NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY FOR 50cc OR LARGER QMB139 ENGINES 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN,... MSRP: Now: $124.95 Add to Cart Compare Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view SSP-G | sku: 169-154 SSP-G 90cc *54mm BORE* MINARELLI JOG BIG BORE KIT 90cc (BASED ON STROKE) 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS *SSP-G* THIS KIT HAS A 54mm CYLINDER BORE & 12mm WRIST PIN WRIST PIN DIAMETER: 12mm WRIST PIN LENGTH: 44mm FITS 1PE50QMB MINARELLI BASED ENGINES WITH... MSRP: Now: $179.95 Add to Cart Compare Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view TAIDA | sku: GY6-01057-67*cFH TAIDA 204cc 67mm GY6 CYLINDER SET FORGED DOME PISTON *57mm SPACING* POLARIS TAIDA 204cc GY6 CYLINDER SET WITH 67mm FORGED DOME PISTON (57mm STUD SPACING) POLARIS RAZOR THIS IS TO BE USED WITH STOCK CRANKSHAFT *57.8* INCLUDES CERAMIC 67mm CYLINDER FOR 57mm SPACING *B-BLOCK* FORGED DOME... MSRP: Now: $339.95 Add to Cart Compare Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view TAIDA | sku: J300-204 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START & BORING TOOL* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $799.95 Add to Cart Compare Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view TAIDA | sku: J300-204-2 TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *J-300 EASY START* TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC *HIGH HEAT* 67mm CYLINDER PISTON, RINGS, TOP & BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm... MSRP: Now: $729.95 Add to Cart Compare Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view TAIDA TAIDA 204cc POLARIS RAZOR 170 BIG BORE KIT COMPLETE *WITHOUT BORING TOOL* CAST PISTON TAIDA HIGH PERFORMANCE 204cc BIG BORE KIT INCLUDED IN KIT CERAMIC 67mm CYLINDER (CAST) PISTON, RINGS, TOP AND BOTTOM GASKETS WRIST PIN AND CIR CLIPS CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH TAIDIA 30.5... MSRP: Now: $549.95 Out of stock Compare Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected
Quick view GY6 STORE | sku: TYPE #3 A 58.5mm (155cc) BIG BORE KIT FOR SCOOTER ATV KART WITH 150cc GY6 MOTORS TYPE #3 A GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS58.5mm BORE (NO BORING REQUIRED)TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST SET... MSRP: Now: $109.95 Out of stock Compare 1 2 Next 1 2 Next Compare Selected