Overview Reviews Product Description GY6 STORE 50CC 4-STROKE QMB139 COMPLETE ENGINE ASSEMBLY. LONG CRANKCASE **THIS IS THE LONG SHAFT FOR 2-SHOCK SET UP** ENGINE (50CC QMB139 LONG CASE ) ENGINE IS SET UP FOR PAIR EMISSIONS SYSTEM. PAIR IS AN ACRONYM FOR PULSED SECONDARY AIR INJECTION SYSTEM. IT IS AN EMISSIONS CONTROL SYSTEM USED TO LOWER HC AND CO EMISSIONS. IT WORKS BY ALLOWING AIR INTO THE EXHAUST FLOW. PLEASE READ THE FOLLOWING IMPORTANT NOTICES: ENGINE OIL 10W-40. DO NOT RUN ENGINE WITHOUT ADDING SPECIFIED AMOUNTS OF OIL. CHECK OIL LEVEL AFTER LETTING THE ENGINE IDLE FOR A FEW MINUTES, ADD ADDITIONAL OIL IF NEEDED. SET UP FOR DRUM BRAKES THIS ENGINE ONLY SHIPS TO THE CONTINENTAL U.S. HAS A NO-RETURN POLICY ON ALL ENGINES, BARRING MANUFACTURE DEFECT OR SHIPPING DAMAGE. PREMIUM QUALITY, HAND INSPECTED, QC VERIFIED OUTPUT SHAFT LENGTH: 122MM ACCOMMODATES 12-13 INCH WHEEL SIZE SET UP FOR DRUM BRAKE SET UP FOR PAIR EMISSIONS SYSTEM 8 POLE A/C STATOR 69MM VALVES SHIPPED DRY DO NOT RUN ENGINE WITHOUT ADDING SPECIFIED AMOUNTS OF OIL THIS ENGINE ONLY SHIPS TO THE CONTINENTAL U.S. FITS SOME MODELS OF JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, GATOR AND MANY OTHERS Product Videos Custom Field Product Reviews Write a Review Write a Review × GY6 STORE 50cc 4-stroke GY6 QMB139 COMPLETE ENGINE ASSEMBLY LONG CASE / LONG SHAFT *DOUBLE REAR SHOCK* Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *
Quick view Details GY6 STORE | sku: ENGINE 46/29 50cc 4-stroke GY6 QMB139 COMPLETE ENGINE ASSEMBLY LONG CASE / SHORT SHAFT *SINGLE REAR SHOCK* MSRP: Now: $399.95 Add to Cart Quick view Details TAOTAO / TAO MOTORS | sku: 602112 TAO TAO QMB139 EXT 3 ENGINE (50cc LONG CASE) *OEM* MSRP: Now: $299.95 Out of stock Quick view Details SSP-G | sku: 169-239 SSP-G 44mm STROKER CRANKSHAFT ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $189.95 Add to Cart Quick view Details GY6 STORE | sku: 65276 AIR FILTER FOR 50cc QMB139 & 150cc GY6 ENGINES *TYPE 4* MSRP: Now: $5.95 Add to Cart Quick view Details GY6 STORE | sku: 151-250 OIL PUMP ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES *47 TOOTH OIL PUMP* MSRP: Now: $9.95 Add to Cart Quick view Details DR. PULLEY | sku: 1200-1261 DR. PULLEY VARIATOR SLIDES FOR 16x13 50cc 60cc 80cc 100cc GY6 QMB139 4-STROKE ENGINES MSRP: Now: $4.95 Add to Cart Quick view Details GY6 STORE KICKSTARTER GEAR BUSHING (LARGE) FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.25 Add to Cart Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options × OK
Quick view Details TAOTAO / TAO MOTORS | sku: 602112 TAO TAO QMB139 EXT 3 ENGINE (50cc LONG CASE) *OEM* MSRP: Now: $299.95 Out of stock Quick view Details SSP-G | sku: 169-239 SSP-G 44mm STROKER CRANKSHAFT ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $189.95 Add to Cart Quick view Details GY6 STORE | sku: 65276 AIR FILTER FOR 50cc QMB139 & 150cc GY6 ENGINES *TYPE 4* MSRP: Now: $5.95 Add to Cart Quick view Details GY6 STORE | sku: 151-250 OIL PUMP ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES *47 TOOTH OIL PUMP* MSRP: Now: $9.95 Add to Cart Quick view Details DR. PULLEY | sku: 1200-1261 DR. PULLEY VARIATOR SLIDES FOR 16x13 50cc 60cc 80cc 100cc GY6 QMB139 4-STROKE ENGINES MSRP: Now: $4.95 Add to Cart Quick view Details GY6 STORE KICKSTARTER GEAR BUSHING (LARGE) FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.25 Add to Cart Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options × OK
Quick view Details SSP-G | sku: 169-239 SSP-G 44mm STROKER CRANKSHAFT ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $189.95 Add to Cart Quick view Details GY6 STORE | sku: 65276 AIR FILTER FOR 50cc QMB139 & 150cc GY6 ENGINES *TYPE 4* MSRP: Now: $5.95 Add to Cart Quick view Details GY6 STORE | sku: 151-250 OIL PUMP ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES *47 TOOTH OIL PUMP* MSRP: Now: $9.95 Add to Cart Quick view Details DR. PULLEY | sku: 1200-1261 DR. PULLEY VARIATOR SLIDES FOR 16x13 50cc 60cc 80cc 100cc GY6 QMB139 4-STROKE ENGINES MSRP: Now: $4.95 Add to Cart Quick view Details GY6 STORE KICKSTARTER GEAR BUSHING (LARGE) FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.25 Add to Cart Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options
Quick view Details GY6 STORE | sku: 65276 AIR FILTER FOR 50cc QMB139 & 150cc GY6 ENGINES *TYPE 4* MSRP: Now: $5.95 Add to Cart Quick view Details GY6 STORE | sku: 151-250 OIL PUMP ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES *47 TOOTH OIL PUMP* MSRP: Now: $9.95 Add to Cart Quick view Details DR. PULLEY | sku: 1200-1261 DR. PULLEY VARIATOR SLIDES FOR 16x13 50cc 60cc 80cc 100cc GY6 QMB139 4-STROKE ENGINES MSRP: Now: $4.95 Add to Cart Quick view Details GY6 STORE KICKSTARTER GEAR BUSHING (LARGE) FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.25 Add to Cart Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options
Quick view Details GY6 STORE | sku: 151-250 OIL PUMP ASSEMBLY FOR 50cc 4-STROKE QMB139 ENGINES *47 TOOTH OIL PUMP* MSRP: Now: $9.95 Add to Cart Quick view Details DR. PULLEY | sku: 1200-1261 DR. PULLEY VARIATOR SLIDES FOR 16x13 50cc 60cc 80cc 100cc GY6 QMB139 4-STROKE ENGINES MSRP: Now: $4.95 Add to Cart Quick view Details GY6 STORE KICKSTARTER GEAR BUSHING (LARGE) FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.25 Add to Cart Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options
Quick view Details DR. PULLEY | sku: 1200-1261 DR. PULLEY VARIATOR SLIDES FOR 16x13 50cc 60cc 80cc 100cc GY6 QMB139 4-STROKE ENGINES MSRP: Now: $4.95 Add to Cart Quick view Details GY6 STORE KICKSTARTER GEAR BUSHING (LARGE) FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.25 Add to Cart Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options
Quick view Details GY6 STORE KICKSTARTER GEAR BUSHING (LARGE) FOR 50cc 4-STROKE QMB139 ENGINES MSRP: Now: $2.25 Add to Cart Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options
Quick view Details GY6 STORE | sku: 100-151 REAR BRAKE CABLE FOR QMB139 50cc & GY6 150cc SCOOTERS MSRP: Now: $11.95 Choose Options