Quick view Details ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT MSRP: Now: $204.95 Add to Cart Compare Quick view Details TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* MSRP: Now: $209.95 Out of stock Compare Quick view Details TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* MSRP: Now: $219.95 Out of stock Compare Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON MSRP: Now: $49.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) MSRP: Now: $49.95 Add to Cart Compare Quick view Details TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES MSRP: Now: $425.00 Choose Options Compare SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* MSRP: Now: $209.95 Out of stock Compare Quick view Details TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* MSRP: Now: $219.95 Out of stock Compare Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON MSRP: Now: $49.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) MSRP: Now: $49.95 Add to Cart Compare Quick view Details TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES MSRP: Now: $425.00 Choose Options Compare SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* MSRP: Now: $219.95 Out of stock Compare Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON MSRP: Now: $49.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) MSRP: Now: $49.95 Add to Cart Compare Quick view Details TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES MSRP: Now: $425.00 Choose Options Compare SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON MSRP: Now: $49.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) MSRP: Now: $49.95 Add to Cart Compare Quick view Details TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES MSRP: Now: $425.00 Choose Options Compare SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON MSRP: Now: $49.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) MSRP: Now: $49.95 Add to Cart Compare Quick view Details TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES MSRP: Now: $425.00 Choose Options Compare SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) MSRP: Now: $49.95 Add to Cart Compare Quick view Details TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES MSRP: Now: $425.00 Choose Options Compare SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES MSRP: Now: $425.00 Choose Options Compare SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
SALE Quick view Details TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare
SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare
Quick view Details TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V MSRP: Now: $314.95 Choose Options Compare Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* MSRP: Now: $239.95 Choose Options Compare Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view Details NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc MSRP: Now: $424.95 Add to Cart Compare Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view ATHENA | sku: 135-1 ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT ATHENA 47.6mm HONDA DIO-SR BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, CYLINDER HEAD, PISTON, RING, PISTON PIN, CIR CLIPS, HEAD GASKET, BASE GASKET AND EXHAUST GASKET. WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT IN... MSRP: Now: $204.95 Add to Cart Compare Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view TAIDA | sku: TD50mm TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc* TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $209.95 Out of stock Compare Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view TAIDA | sku: TD50cc TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc* TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL... MSRP: Now: $219.95 Out of stock Compare Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES 80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view GY6 STORE 172cc (61mm BORE) K-BLOCK CYLINDER SET WITH *57mm SPACING* CAST PISTON HIGH PERFORMANCE 172cc (61mm) CYLINDER SET FOR 57mm SPACING (MOST PEOPLE CALL THESE 200cc) CYLINDER JUG (61mm) 57mm SPACING *K-BLOCK* GASKET SET KBF CAST PISTON PISTON RINGS WRIST PIN & CLIPS *NO CASE BORING... MSRP: Now: $49.95 Add to Cart Compare Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view GY6 STORE | sku: 88807-N 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER... MSRP: Now: $49.95 Add to Cart Compare Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view TAIDA TAIDA 172cc 61mm COMPLETE BIG BORE KIT (OD 62.7) GY6 (54mm SPACING) 28.5/24 VALVES TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28.5/24 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 61mm TAIDA CYLINDER WITH PISTON & PISTON RINGS... MSRP: Now: $425.00 Choose Options Compare SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
SALE Quick view TAIDA TAIDA JOG 90cc 54mm BORE LIQUID-COOLED CYLINDER KIT TAIDA JOG LIQUID COOLED CYLINDER KIT SIZE 53 X 42 MM FOR 90CC 2-STROKE 50QMF, E50QMF, 1E50QMF AND 1PE50QMF MINARELLI ENGINES. TAIDA JOG 90CC LIQUID-COOLED CYLINDER KIT SPECIFICATIONS: CYLINDER BORE: 53MM EXHAUST PORT DIAMETER (AT WIDEST... MSRP: $440.00 Was: $440.00 Now: $393.75 Add to Cart Compare
SALE 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: $399.95 Was: $399.95 Now: $361.55 Add to Cart Compare
Quick view TAIDA | sku: GY6-06057-67-75 TAIDA CERAMIC LIQUID COOLED CYLINDER SET 67mm (57mm SPACING) 2V TAIDA 232cc GY6 CERAMIC LIQUID COOLED CYLINDER SET W/ 67mm 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. THE FORGED... MSRP: Now: $314.95 Choose Options Compare Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected × OK
Quick view TAIDA | sku: GY6-01057-67c TAIDA CERAMIC CYLINDER SET 67mm BORE (57mm SPACING) *69.9mm HEIGHT* TAIDA GY6 CYLINDER SET WITH 67mm BORE (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 PISTON PISTON... MSRP: Now: $239.95 Choose Options Compare Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected
Quick view NCY | sku: PKCSCGO-2 STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139 TAKES YOUR 50CC QMB139 TO 72CC KIT INCLUDES SKUS: 0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM... MSRP: Now: $424.95 Add to Cart Compare 1 2 3 4 5 Next 1 2 3 4 5 Next Compare Selected
