Amazon.com: Glixal ATKS-041 High Performance Racing Variator Kit with 6.5 gram Roller Weights for Chinese Scooter Moped ATV 4-Stroke GY6 50cc 80cc 100cc 139QMB 139QMA Engine Front Clutch : Automotive
Amazon.com: Racing Driving Wheel Roller 5 Gram Weight Set replacement for GY6 50CC 139QMB 49cc 50cc Scooter Moped Jonway ATV : Automotive