GY6 QMJ 49cc 50cc Scooter Moped ATV Go Kart Roller Fan Clutch Variator Engine Feature Adopted high quality materials that meet or exceed original requirements. Stable characteristics, high reliability, long service life. To make installation even easier, our Clutch is a direct replacement and requires absolutely no modifications to your machine. Easy installation, No instructions. Specfication 100% Brand New Aftermarket Color: As photo shown well finished Size 16mm x13mm Roller Weight: 8.5 g Inner Diameter (drive face): 20mm Outer Diameter (drive face): 87 mm Fitment Fit For GY6 49cc 50cc Scooter Moped ATV GO KART This part will fit most of the makes and models of Chinese Scooters Mopeds with 49cc 50cc 4-stroke GY6 QMJ/QMI137 engine Go-Kart Most Chinese brand, like TaoTao, Coolsport, SUNL, etc Avanti, Baja, Baotian, Bms, Bmx, Diamo, Eagle, Fushin, Ice Bear,Jackel, Moto, Jm Star, Jonway, Kazuma, Keeway, Kymco, Motofino,Panther, Redcat, Roketa