Description: 100% brand New Starter Motor Clutch Gear Assembly GY6 50cc QMB/139 4 Stroke Scooter Mopeds ATV. Match original equipment exactly for a perfect fit, easy to install. Center Shaft Diameter: 8 mm; Outer Diameter of Bottom Gear: 40mm Please check for the details and make sure this is the right one you need. Specification: Fits most makes and models of Chinese Scooters and Mopeds with 49cc 50cc 4-stroke GY6 QMB139 engine. The Starter Motor Clutch Gear Assembly can also fits most brand such as BLADE, Kinroad, Twister Hammerhead, Carter Talon, Dazon, Roketa, DUNE, Baja, kart, Kasea, KPX, SUNL, Taotao, JCL, Kazuma, etc. Honda, Yahama, Bombardie, Kawasaki, Polaris, and Suzuki. Center Shaft Diameter: 8 mm Outer Diameter of Bottom Gear: 40mm Package Includes: 1 Piece Starter Gear Assembly
