Direct replacement fits 5/8 standard crankshaft, built-in square key and set screw. This clutch compatible with most for Mini Bikes and Go Carts equipped with 40/41/420 chain Please check picture and description before placing order. Feel free to tell us via Email if any quality problem or dissatisfaction occurs. Pls use engine crankshaft diameter and chain size to choose the clutch you needed. Engineered to reduce failures. Quality tested for trouble-free performance. Quick and easy installation. Thermodynamically designed clutch shoe increases the clutchs capacity to absorb heat without damaging the clutch springs, ensures a longer life ad reliability.
NOTE: Does not come with set screws.Specification:Material: IronClutch: 5/8″ Bore 10 ToothFitment: Go Kart, for Mini Bike, Lawnmower Package Includes:1 x Centrifugal Clutch