SALE Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare
Quick view Details GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* MSRP: Now: $29.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR MSRP: Now: $44.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS MSRP: Now: $2.00 Add to Cart Compare Quick view Details NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS MSRP: Now: $29.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR MSRP: Now: $44.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS MSRP: Now: $2.00 Add to Cart Compare Quick view Details NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS MSRP: Now: $29.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS MSRP: Now: $2.00 Add to Cart Compare Quick view Details NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS MSRP: Now: $29.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS MSRP: Now: $2.00 Add to Cart Compare Quick view Details NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS MSRP: Now: $29.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS MSRP: Now: $29.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 MSRP: Now: $59.95 Add to Cart Compare Quick view Details GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Compare SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
SALE Quick view SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS 50cc QMB139 4-STROKE 52mm, PERFORMANCE CYLINDER HEAD. INTAKE VALVE DIAMETER: 21.5mm INTAKE PORT DIAMETER: 24mm EXHAUST VALVE DIAMETER: 18.9mm EXHAUST PORT... MSRP: $147.99 Was: $147.99 Now: $143.95 Add to Cart Compare
Quick view GY6 STORE | sku: 62830-N 50cc CRANKSHAFT ASSEMBLY SCOOTER WITH 4-STROKE QMB139 MOTORS *16 TOOTH* 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS FITS SOME CHINESE SCOOTERS WITH 50cc QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE | sku: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 1100-4064 / 151-238 CRANKSHAFT TYPE-2 FOR 50cc 4-STROKE QMB139 ENGINES WITH 22 TOOTH OIL PUMP GEAR 50cc CRANKSHAFT ASSEMBLY FOR SCOOTERS WITH 50cc 4-STROKE QMB139 MOTORS STROKE: 41.4mm OVERALL LENGTH: 247mm THREAD SIZE (TAPERED SIDE): M10X1.25 THREAD SIZE (SPLINE SIDE): M12X1.25 BEARING OUTER DIAMETER (TAPERED SIDE):... MSRP: Now: $44.95 Add to Cart Compare Quick view GY6 STORE | sku: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 15769-52 VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM SEALS) VALVE SEALS FOR 150cc GY6 AND 50cc QMB139 MOTORS (VALVE STEM / OIL SEALS) (BUYER GETS 1 PAIR) FITS MOST CHINESESCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS Inner Diameter: 4.5mm Outer Diameter: 11mm Height: 8... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE | sku: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 90467-N STATOR WIRE RETAINER / CLAMP FOR CHINESE SCOOTERS, ATVS WITH 150cc GY6 MOTORS STATOR WIRE RETAINER / CLAMPFOR CHINESE SCOOTERS, ATVS,AND KARTS WITH GY6 150cc OR QMB139 50cc MOTORS FITS TAOTAO, JMSTAR, TANK, ROKETA, SUNL, JONWAY, GATOR, AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL* MSRP: Now: $2.00 Add to Cart Compare Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view NARAKU | sku: 137-36 NARAKU 2V PISTON & RINGS KIT (47mm BORE) FOR SCOOTERS QMB139 MOTORS NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 47mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS. PISTON DIAMETER: 47mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 34.1mm FITS... MSRP: Now: $29.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *69mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *69mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS WITH 50cc GY6 MOTORS *64mm VALVES* #3 72cc / 80cc BIG BORE KIT FOR CHINESE SCOOTERS (#3)47mm BORE (NO BORING REQUIRED) SET CONTAINS NON EGR CYLINDER HEAD *64mm VALVES* (47mm BORE) CYLINDER PISTON & RINGS SET HIGH PREFORMANCE... MSRP: Now: $59.95 Add to Cart Compare Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GY6 STORE 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR 72cc / 80cc (47mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER FOR BETTER PERFORMANCE KIT... MSRP: Now: $39.95 Add to Cart Compare Quick view GY6 STORE | sku: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart 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: 90091 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected
Quick view GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS 81cc / 100cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 50mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 50mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT... MSRP: Now: $19.95 Add to Cart Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected