Fitment: This clutch pulley just fit for Coleman minibikes and Go karts with 16mm diameter drive shaft Note: Please measure your shaft or the stock clutch bore before you buy Performance: It works well with your go kart or mini bike clutch and engine ,give you more power good performance without overload. Package Included: Come with the mounting lock nut QYMOTO 30 Series Driven Pulley torque converter 16mm Bore 6’’Diameter Driven Asymmetric for Coleman KT196 Go Kart CT200U CT200U EX Mini Bike