ITEM NAME:Performance Variator Front Clutch for Chinese Scooters 50/80cc GY6 139QMB Description: This is a brand new variator Assembly. Fit for most makes and models of Chinese Scooters, Mopeds, ATV's & Karts with 50cc 4 Stroke GY6 Based QMB139 engines. May also fit ATV dirt bikes GoKarts with similar engines Fitment: for Chinese scooters brands like: Coolsport | TaoTao | Roketa | Kazuma | Sunl | Baccio | Tank | Quinqui | Jonway | Keeways | Vento | Electra | Baja | Honda | Redcat | UM | Italika and MORE! Specification: Material: Metal 16mm x13mm Roller Weight: 8.5 g Inner Diameter (drive face): Approx. 20 mm / 0.79 inch Outer Diameter (drive face): 88 mm / 3.46 inch Package Includes: 1 Set Variator Belt Drive.1 Set Variator Belt Drive. Fit for most makes and models of Chinese Scooters, Mopeds, ATV's & Karts with 50cc 4 Stroke GY6 Based QMB139 engines.