Clutch Assembly that is used on many of the 70 – 125cc Chinese ATVs. Semi Automatic with 17 teeth on the gear. This clutch also comes with the Clutch Nut Removal Socket. Please be sure your clutch matches our picture and that the tooth count on your gear = 17 prior to ordering. Coolster 110cc ATVs: 3050A, 3050AX, 3050B, 3050B-2, 3050C, 3050D Coolster 125cc ATVs: ATV-3125A2, ATV-3125B, ATV-3125C-2, ATV-3125CX-2, ATV-3125CX-3, ATV-3125R, ATV-3125X8, ATV-3125XR8, ATV-3125XR8-S, ATV-3125XR8-U-S Tao Tao ATVs: ATA 125D, ATA 125F1, ATA 125A, ATA 135D, ATA 135DU, Cheetah, G125 Cheetah, TForce, T Force, This clutch will also fit additional Tao Tao models not listed above.