Direct replacement fits all engines with a 1 Straight Crankshaft. Coming with 2 sprockets for your convenience. 10-tooth sprocket for a 420/41/40 chain and a 12-tooth sprocket for a 35 chain. Helping you get more power by reducing engine load. A torque converter allows higher speeds of engine and achieves smoother acceleration. Directly compatible and built to last, OCPTY Go Carts Clutch Kits stand out as the for Smart option. Please check product appearance and specifications to Make sure this is the right part you need. Any question you have please contact us for a answer. COMPATIBILITY:Comet 218353A, 219552A, 219456A, 217610A, and 203814A TAV2 30-75.Yerf Dog Drive Unit Q43201W.TAV2 30 Series Go Kart Clutch.Recommended engine: 8HP-13HP enginesEngagement range: 2350+/-200 RPMBelt: Asymmetrical typeDrive clutch bore: 1″(25.4mm )Driven unit: Diameter 6″ (5/8″ driven pulley)Package Includes:Drive beltPlastic AssyDriver pulleyBore driven pulleyAluminum Mounting B