Brand new replacement Complete Variator Kits Compatibility: Fit for GY6 49cc 50cc Chinese Scooter ATV Moped Go Kart with QMB139 Engines Application: fits many models like Roketa, Baja kart, Cross Runner, Cool Sports, Taotao, Peace, JM Star, Jonway, Kazuma, Keeway, Qlink Yiben, Red Streak, Redcat, Roketa, Baotian, Bashan, BMS, BMX, Boreem, Eagle etc Package: 1 x Variator Belt Drive Set Please carefully check the pictures and description for compatibility before purchase Product Description Specification: Drive face center hole: 26 teeth [spline shaft] Drive face hole diameter: 14mm [.55″] Drive face diameter: 9.06cm [3.57″] Variator face diameter: 8.77cm [3.45″] Roller width: 13mm [0.5″] Roller OD: 16mm [0.63″] Roller ID: 9.45mm [0.37″] 9 gram roller weights OD of gear: 11.4cm [4.5″] 62 Tooth [outside] Compatible with: For 49cc 50cc for GY6 Scooter ATV Moped Go Kart QMB139 Engines This parts fits on many models such as: Blade, Kinroad, Twister Hammerhead, Carter Talon, Daz