Product DescriptionGet your go kart or mini bike up and running with this upgraded clutch and chain set! (1) 3/4″ Bore #35 Chain 12 Tooth Clutch (1) 4′ length of #35 chain *Includes required crankshaft bolt for most motors.* Packaging removed for shipping. Rated up to 13HP (4 stroke) 2300 RPM Engagement Replaceable Sprocket Hilliard’s new patent pending Extreme Duty centrifugal clutch can handle higher temperatures to offer longer clutch life. * Bi-Directional, can run clockwise & counter clockwise. * Disates 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. Hilliard’s Extreme Duty – 3/4″ 12 Tooth #35