Overview Reviews Product Description 100CC BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 50MM CYLINDER BORE AND 69MM VALVES NON EGR CYLINDER HEAD COMES WITH EVERYTHING IN THE PHOTOS OVERALL HEIGHT 59.5MM INTAKE PORT DIAMETER 18MM EXHAUST PORT DIAMETER 17MMI INTAKE BOLT HOLE SPACING 44.5MM EXHAUST BOLT HOLE SPACING 50MM 50MM CYLINDER BODY CYLINDER HEAD & BASE GASKETS LEFT CTV COVER GASKETS 15.75 INCHES(SHORT CASE) 50MM PISTONS SET (PISTON, RINGS, PIN, CIR CLIPS) 16*13 ROLLER WEIGHTS CYLINDER HEAD STUD BOLTS OIL PUMP AND OIL PUMP SPROCKET (33TEETH) FITS MOST CHINESE SCOOTERS WITH 50CC QMB139 MOTORS WITH 69MM VALVES FITS TAOTAO, VIP, ATM, SPEEDY, AND MANY OTHERS Product Videos Custom Field Product Reviews Write a Review Write a Review × GY6 STORE 100cc BIG BORE KIT FOR CHINESE SCOOTER NON EGR *69mm VALVES* 139QMB (50mm BORE) 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: 90089, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88810, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 90093, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 90091, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart ×
Quick view Details GY6 STORE | sku: 88810, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 90093, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 90091, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart ×
Quick view Details GY6 STORE | sku: 90093, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* NON EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 90091, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart ×
Quick view Details GY6 STORE | sku: 90091, 87820, 87954, 87780 100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart ×
Quick view Details GY6 STORE | sku: 88810 81cc / 100cc (50mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS MSRP: Now: $19.95 Add to Cart Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart ×
Quick view Details GY6 STORE | sku: 20221 72cc / 80cc (47mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* NON-EGR MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart ×
Quick view Details GY6 STORE | sku: 88806 80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES MSRP: Now: $39.95 Add to Cart Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart ×
Quick view Details GY6 STORE | sku: 87820 100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS MSRP: Now: $10.95 Add to Cart