Quick view Details UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT MSRP: Now: $30.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT MSRP: Now: $194.95 Add to Cart Compare Quick view Details UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL MSRP: Now: $73.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 MSRP: Now: $109.95 Add to Cart Compare Quick view Details OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $2.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* MSRP: Now: $2.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 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: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT MSRP: Now: $194.95 Add to Cart Compare Quick view Details UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL MSRP: Now: $73.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 MSRP: Now: $109.95 Add to Cart Compare Quick view Details OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $2.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* MSRP: Now: $2.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL MSRP: Now: $73.95 Add to Cart Compare Quick view Details NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 MSRP: Now: $109.95 Add to Cart Compare Quick view Details OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $2.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* MSRP: Now: $2.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 MSRP: Now: $109.95 Add to Cart Compare Quick view Details OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $2.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* MSRP: Now: $2.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS MSRP: Now: $2.50 Add to Cart Compare Quick view Details GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $2.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* MSRP: Now: $2.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $2.95 Add to Cart Compare Quick view Details GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* MSRP: Now: $2.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 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: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* MSRP: Now: $2.95 Add to Cart Compare Quick view Details SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 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: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT MSRP: Now: $36.95 Add to Cart Compare SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
SALE Quick view Details OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare
Quick view Details SSP-G | sku: 169-343 SSP-G 52mm BIG BORE RACING HEAD FOR 50cc QMB139 MOTORS MSRP: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 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: 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 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 UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view UNIVERSAL PARTS | sku: 169-332 SSP-G QMB139 50cc - 100cc BEARING & SEAL KIT CRANKSHAFT BEARING AND SEAL KIT FOR QMB139 50cc, 4-STROKE ENGINES. THIS PRECISION TAIWANESE BEARING KIT CONTAINS THE RIGHT AND LEFT CRANKSHAFT BEARINGS AND SEALS. INCLUDES: 6204C3 BEARING - OUTER DIAMETER: 47mm, INNER DIAMETER:... MSRP: Now: $30.95 Add to Cart Compare Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view SSP-G | sku: 169-518 SSP-G 50MM QMB139 BIG BORE CYLINDER & HEAD KIT SSP-G QMB139 50mm PERFORMANCE CYLINDER & HEAD KIT INCLUDES CYLINDER, PISTON, PISTON RINGS, WRIST PIN, CIR CLIPS, COMPLETE CYLINDER HEAD WITH 64mm VALVES, EXHAUST GASKET, INTAKE GASKET, AND CAM CHAIN TENSIONER... MSRP: Now: $194.95 Add to Cart Compare Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view UNIVERSAL PARTS | sku: 169-337 CHROME BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS SHORT CASE MODEL CHROME 50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRESOVERALL LENGTH 16"FITS JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATORAND MANY OTHERS MSRP: Now: $73.95 Add to Cart Compare Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view NARAKU | sku: 137-78 NARAKU CRANKSHAFT HEAVY DUTY 16 TOOTH FOR 50cc - 100cc QMB139 NARAKU PERFORMANCE HEAVY DUTY CRANKSHAFT FOR 50cc, 4-STROKE QMB139 ENGINES - OIL PUMP SPROCKET 16 TOOTH OEM-QUALITY NARAKU CRANKSHAFT MATCHES JAPANESE AND TAIWANESE ALTERNATIVES. KITTED WITH HIGH QUALITY, HEAVY DUTY BEARINGS WHICH ALLOW FOR... MSRP: Now: $109.95 Add to Cart Compare Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view OKO | sku: 145-78 OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 150cc OR QMB139 50cc MOTORS OKO CR7HNS SPARK PLUG FOR SCOOTER WITH GY6 MOTORS FITS MOST CHINESE SCOOTERS WITH GY6 150cc OR QMB139 50cc MOTORS THREAD SIZE: 10mmREACH: 12.7mm (1/2 INCH)HEX SIZE: 16mm (5/8 INCH)GAP: 0.7mm (.028 INCH)HEAT RANGE: 7DOES NOT INCLUDE TERMINAL... MSRP: Now: $2.50 Add to Cart Compare Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GY6 STORE 64mm VALVE SET FOR SCOOTERS WITH 50cc QMB139 MOTORS 50cc 64mm VALVE SET FOR SCOOTERS WITH QMB139 MOTORS INTAKE OAL 64mmINTAKE DIA 18.5mmINTAKE VALVE SHAFT 5mmEXHAUST OAL 64mmEXHAUST DIA 16mmEXHAUSTVALVE SHAFT 5mm FITS MANY MODELS LIKE JONWAY, JMSTAR, ROKETA, SUNL,... MSRP: Now: $2.95 Add to Cart Compare Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GY6 STORE | sku: 62770 WOODRUFF / CRANKSHAFT KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS *BUYER GETS 4* WOODRUFF KEY FOR SCOOTERS WITH 50cc QMB139 MOTORS SEE # 2 ON PICTURE BUYER GETS 4 KEYS FITS MOST MODELS OF TAOTAO, WOLF, ICE BEAR, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, GATORAND MANY... MSRP: Now: $2.95 Add to Cart Compare Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view SSP-G | sku: 169-380 SSP-G QMB139 52mm PISTON & PISTON RINGS KIT SSP-G PISTON KIT FOR THE 50cc QMB139 4-STROKE 52mm FOR RACING BIG BORE CYLINDER SET PISTON OUTER DIAMETER: 52mmTOTAL PISTON HEIGHT: 34.8mmCOMPRESSION HEIGHT: 17.3mmWRIST PIN DIAMETER: 13mmWRIST PIN LENGTH: 36mmINCLUDES PISTON,... MSRP: Now: $36.95 Add to Cart Compare SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare 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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
SALE Quick view OKO | sku: 169-507 OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 50cc 60cc 80cc 100cc HIGH TORQUE QMB139 STARTER MOTOR OKO 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 INSTALL HEAVY... MSRP: $69.99 Was: $69.99 Now: $59.99 Add to Cart Compare
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: 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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected
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 Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected