Clutch Variator Roller Fan Engine GY6 49cc 50cc Scooter Moped ATV Go Kart Sunl Description 100% brand new aftermarket replacement motorcycle clutch assembly variator kit. Adopted high quality materials that meet or exceed requirements. Standard, directly replace your old or broken one. Stable characteristics, high reliability, long service life. Easy installation, no instructions included, compatible for GY6 Scooter Roller 125cc 150cc 157QMJ., Specification 16mm x13mm Roller Weight: 8.5 g Inner Diameter (drive face): 20 mm Outer Diameter (drive face): 87 mm Material: Metal Color: Silver Fitment GY6 49 50 cc 4-stroke GY6 QMJ/QMI137 Scooter Moped ATV GO KART Most Chinese brand, like TaoTao, Coolsport, SUNL, etc… Package Included 1 set of Clutch Variator