1″Bore 10 Tooth #41/420 Chain Heavy Duty Centrifugal Clutch Go-Kart Mini-Bike
Description： This fits on a 1″ crankshaft the other end is 3/8″. The crankshaft must be threaded to accept a bolt to hold clutch onto shaft. Comes with two set screws and 1/4″ key. This is a heavy duty clutch designed for standard live axle karts using up to 18″ tall tires. The 10t sprocket allows you to achieve a desired gear ratio for good pulling power, recommend using at least a 60T drive sprocket. For larger tire application and extreme riding you will need a torque converter. Not available for #35 chain The bottom aperture is 1 inch.The top aperture is 0.53 inches. Dimensions: .