Hilliard Extreme Duty Clutch #40/41/420 10T 3/4 Bore

Stock engagement at 2300 RPM’s Bi-Directional, can run clockwise & counter clockwise. Dissipates heat better, extending clutch life. Clutch is easily tuned for your specific need. Quick change spring and sprocket design. No special tools needed. Built-in internal keyway. Must use crankshaft bolt.