Quick view Details TAIDA TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 (54mm SPACING) MSRP: Now: $199.95 Out of stock Compare Quick view Details NARAKU | sku: 137-4 NARAKU SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD KIT *52.4mm* MSRP: Now: $254.95 Add to Cart Compare Quick view Details GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS MSRP: Now: $24.95 Add to Cart Compare Quick view TAIDA TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 (54mm SPACING) TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28/23 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 58.5mm TAIDA CYLINDER WITH PISTON & PISTON RINGS INSTALLED (CAST... MSRP: Now: $199.95 Out of stock Compare Quick view NARAKU | sku: 137-4 NARAKU SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD KIT *52.4mm* NARAKU 50cc QMB139 4-STROKE 52.4mm, RACING BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE... MSRP: Now: $254.95 Add to Cart Compare Quick view GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS 80cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERSTHIS KIT HAS A 47mm CYLINDER BORE THIS KIT HAS NO CYLINDER HEAD QMB139 47MM PISTON KIT PISTON DIAMETER: 47mm PISTON PIN DIAMETER: 13mm PISTON PIN LENGTH:... MSRP: Now: $24.95 Add to Cart Compare Previous 1 2 3 4 5 Previous 1 2 3 4 5 Compare Selected × OK
Quick view Details NARAKU | sku: 137-4 NARAKU SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD KIT *52.4mm* MSRP: Now: $254.95 Add to Cart Compare Quick view Details GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS MSRP: Now: $24.95 Add to Cart Compare Quick view TAIDA TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 (54mm SPACING) TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28/23 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 58.5mm TAIDA CYLINDER WITH PISTON & PISTON RINGS INSTALLED (CAST... MSRP: Now: $199.95 Out of stock Compare Quick view NARAKU | sku: 137-4 NARAKU SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD KIT *52.4mm* NARAKU 50cc QMB139 4-STROKE 52.4mm, RACING BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE... MSRP: Now: $254.95 Add to Cart Compare Quick view GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS 80cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERSTHIS KIT HAS A 47mm CYLINDER BORE THIS KIT HAS NO CYLINDER HEAD QMB139 47MM PISTON KIT PISTON DIAMETER: 47mm PISTON PIN DIAMETER: 13mm PISTON PIN LENGTH:... MSRP: Now: $24.95 Add to Cart Compare Previous 1 2 3 4 5 Previous 1 2 3 4 5 Compare Selected × OK
Quick view Details GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS MSRP: Now: $24.95 Add to Cart Compare Quick view TAIDA TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 (54mm SPACING) TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28/23 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 58.5mm TAIDA CYLINDER WITH PISTON & PISTON RINGS INSTALLED (CAST... MSRP: Now: $199.95 Out of stock Compare Quick view NARAKU | sku: 137-4 NARAKU SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD KIT *52.4mm* NARAKU 50cc QMB139 4-STROKE 52.4mm, RACING BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE... MSRP: Now: $254.95 Add to Cart Compare Quick view GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS 80cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERSTHIS KIT HAS A 47mm CYLINDER BORE THIS KIT HAS NO CYLINDER HEAD QMB139 47MM PISTON KIT PISTON DIAMETER: 47mm PISTON PIN DIAMETER: 13mm PISTON PIN LENGTH:... MSRP: Now: $24.95 Add to Cart Compare Previous 1 2 3 4 5 Previous 1 2 3 4 5 Compare Selected × OK
Quick view TAIDA TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 (54mm SPACING) TAIDA 155cc 58.5mm BIG BORE KIT (OD 60.4) HIGH PERFORMANCE FOR GY6 MOTORS INCLUDES 28/23 TAIDA CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm) 58.5mm TAIDA CYLINDER WITH PISTON & PISTON RINGS INSTALLED (CAST... MSRP: Now: $199.95 Out of stock Compare Quick view NARAKU | sku: 137-4 NARAKU SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD KIT *52.4mm* NARAKU 50cc QMB139 4-STROKE 52.4mm, RACING BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE... MSRP: Now: $254.95 Add to Cart Compare Quick view GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS 80cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERSTHIS KIT HAS A 47mm CYLINDER BORE THIS KIT HAS NO CYLINDER HEAD QMB139 47MM PISTON KIT PISTON DIAMETER: 47mm PISTON PIN DIAMETER: 13mm PISTON PIN LENGTH:... MSRP: Now: $24.95 Add to Cart Compare Previous 1 2 3 4 5 Previous 1 2 3 4 5 Compare Selected × OK
Quick view NARAKU | sku: 137-4 NARAKU SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD KIT *52.4mm* NARAKU 50cc QMB139 4-STROKE 52.4mm, RACING BIG BORE CYLINDER AND HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET. WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE... MSRP: Now: $254.95 Add to Cart Compare Quick view GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS 80cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERSTHIS KIT HAS A 47mm CYLINDER BORE THIS KIT HAS NO CYLINDER HEAD QMB139 47MM PISTON KIT PISTON DIAMETER: 47mm PISTON PIN DIAMETER: 13mm PISTON PIN LENGTH:... MSRP: Now: $24.95 Add to Cart Compare Previous 1 2 3 4 5 Previous 1 2 3 4 5 Compare Selected
Quick view GY6 STORE 80cc (47mm BORE) CYLINDER UPGRADE KIT FOR QMB139 MOTORS 80cc BIG BORE CYLINDER KIT FOR CHINESE SCOOTERSTHIS KIT HAS A 47mm CYLINDER BORE THIS KIT HAS NO CYLINDER HEAD QMB139 47MM PISTON KIT PISTON DIAMETER: 47mm PISTON PIN DIAMETER: 13mm PISTON PIN LENGTH:... MSRP: Now: $24.95 Add to Cart Compare Previous 1 2 3 4 5 Previous 1 2 3 4 5 Compare Selected