NEW - Clutch Assembly for GY6 50cc 4-Stroke Engines. Our high-quality parts are the exact replacement part for many Chinese manufactured brands and models of Chinese Mopeds and Scooters. Complete clutch kit for 50cc Chinese made GY6 139QMB enginese. Commonly found on Scooter Mopeds This fits MOST OF THE MODELS from Roketa, Sunl, Baja, Kazuma, Carroll Stream Eagle, Taotao, Panterra, Kymco, Redcat Tank Giovanni Aimex Jackel Wildfire Xtreme Seaseng Qlink Yiben Jonway Jmstar, Vento, Tng. Specs: Clutch Outer Diameter (pulley): 119mm Outer Diameter (clutch bell): 115mm Inner Diameter (clutch bell): 107mm Inner Diameter (clutch): 12mm Uses 6901-RS bearing Clutch Bell Inner Diameter (splines peak to peak): 11mm Number of Splines (clutch bell): 22 Variator 16mm x13mm Roller Weight: 8.5 g Inner Diameter (drive face): 20mm Outer Diameter (drive face): 87 mm BELT BELT SIZE: 669 mm Length x 18 mm Width x 30 mm teeth spacing