Quick view Details GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Out of stock Compare SALE Quick view Details GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view Details TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON MSRP: Now: $79.95 Out of stock Compare Quick view Details TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON MSRP: Now: $80.73 Add to Cart Compare Quick view Details TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS MSRP: Now: $119.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.75 Add to Cart Compare Quick view Details TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $29.95 Out of stock Compare Quick view Details TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $34.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
SALE Quick view Details GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare
Quick view Details TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON MSRP: Now: $79.95 Out of stock Compare Quick view Details TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON MSRP: Now: $80.73 Add to Cart Compare Quick view Details TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS MSRP: Now: $119.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.75 Add to Cart Compare Quick view Details TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $29.95 Out of stock Compare Quick view Details TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $34.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON MSRP: Now: $80.73 Add to Cart Compare Quick view Details TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS MSRP: Now: $119.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.75 Add to Cart Compare Quick view Details TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $29.95 Out of stock Compare Quick view Details TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $34.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS MSRP: Now: $119.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.75 Add to Cart Compare Quick view Details TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $29.95 Out of stock Compare Quick view Details TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $34.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.75 Add to Cart Compare Quick view Details TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $29.95 Out of stock Compare Quick view Details TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $34.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $29.95 Out of stock Compare Quick view Details TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $34.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* MSRP: Now: $34.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS MSRP: Now: $145.95 Add to Cart Compare Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS MSRP: Now: $169.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $7.50 Add to Cart Compare Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: Now: $86.95 Out of stock Compare Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GY6 STORE | sku: 90088 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: Now: $19.95 Out of stock Compare SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
SALE Quick view GY6 STORE | sku: 90087 50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS 50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT... MSRP: $21.95 Was: $21.95 Now: $10.95 Add to Cart Compare
Quick view TAIDA | sku: GY650-01052 TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 88cc (52mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $79.95 Out of stock Compare Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view TAIDA | sku: GY650-01050 TAIDA 50mm (81cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON TAIDA HIGH PERFORMANCE 81cc (50mm) CYLINDER SET FOR 54mm SPACING INCLUDES CYLINDER JUG (50mm) 54mm SPACING *A-BLOCK* GASKET SET CAST PISTON PISTON RINGS WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:... MSRP: Now: $80.73 Add to Cart Compare Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view TAIDA | sku: GY650-020-23/20 TAIDA BIG VALVE CYLINDER HEAD (FOR 50mm & 52mm CYLINDER , 23 / 20 VALVES) FOR QMB139 MOTORS TAIDA BIG VALVE RACING CYLINDER HEAD FITS: 50mm & 52mm **64mm OVERSIZED VALVES** 64mm 2-VALVE: 23mm INTAKE / 20mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST REQUIRES A 20mm CARBURETOR ALSO A HIGH... MSRP: Now: $119.95 Add to Cart Compare Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GY6 STORE | sku: 61345 OIL PUMP SPROCKET GEAR *33 TEETH* FOR 50cc - 100cc 4-STROKE QMB139 ENGINES OIL PUMP KIT ASSEMBLY FOR 50cc QMB139 ENGINES *THAT USE THE 33 TOOTH OIL PUMP* FITS MOST CHINESE SCOOTERS WITH 50cc QMB139 MOTORS FITS BRANDS LIKE TAOTAO, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, GATOR AND MANY... MSRP: Now: $2.75 Add to Cart Compare Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view TAIDA | sku: GY6-ABVC-4V TAIDA TITANIUM (4V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR TAIDA 4 VALVE HEADS FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $29.95 Out of stock Compare Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view TAIDA | sku: GY6-ABVC-2V TAIDA TITANIUM (2V) VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS *NEW* TAIDA TITANIUM VALVE SPRING RETAINER SET FOR 150cc GY6 MOTORS CAN ALSO BE USED WITH 50cc QMB139 MOTORS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $34.95 Add to Cart Compare Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view NCY | sku: 1100-1435 NCY BIG VALVE RACING CYLINDER HEAD (52mm, 88cc) FOR QMB139 MOTORS NCY BIG VALVE RACING CYLINDER HEAD FITS 52mm (81cc) BORE CYLINDERS 64mm 2-VALVE: 21.5mm INTAKE / 19mm EXHAUST FACTORY PORTED: 24mm INTAKE / 22mm EXHAUST PAIR WITH NCY 52MM CYLINDER KIT FOR A 88cc... MSRP: Now: $145.95 Add to Cart Compare Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view NCY | sku: 1100-1239 NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS NCY HIGH PERFORMANCE CYLINDER HEAD FITS 50mm (81cc) BORE CYLINDERS PAIR WITH NCY 50mm CYLINDER KIT FOR A 81cc BIG BORE KIT. THIS ITEM CAN BE FOUND IN OUR STORE MADE IN... MSRP: Now: $169.95 Add to Cart Compare Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view SSP-G | sku: 169-443 SSP-G VITON VALVE SEALS FOR 150cc GY6 & 50cc QMB139 MOTORS (VALVE STEM SEALS) SSP-G VITON VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) (BUYER GETS 1 PAIR) Viton Valve Seals can handle higher temperatures and have better wear resistance. These will work in 50cc 4-stroke QMB139... MSRP: Now: $7.50 Add to Cart Compare Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected
Quick view TAIDA | sku: GY680-pm002 TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR TAIDA HIGH TORQUE STARTER MOTOR FOR 50cc - 100cc QMB139 4-STROKE ENGINES THIS STARTER MOTOR IS RECOMMENDED FOR ANY QMB WITH A BIG BORE KIT OR STROKER BIG BORE KIT. RECOMMEND... MSRP: Now: $86.95 Out of stock Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected