17 Tooth Automatic Clutch Assembly for 50cc 70cc 90cc 110cc 125cc ATV Dirt Bike Go Kart Pit Bike Quad Go Cart 17 Tooth Automatic Clutch Assembly fits for 50cc-125cc Chinese ATV's fits for 50cc-125cc Semi-Automatic Dirt Bikes fits for 50cc 70cc 90cc 110cc 125cc Horizontal engine