●Wide Application ► This 1 inch bore centrifugal clutch is ideal for go cart, minibike (coleman mini bike, baja doodle bug, monster moto, etc), lawnmower, fun kart, scooters, snowmobiles, and portable generator ●Proven Reliability ► This go kart clutch is used on 3 to 8 HP engines with 1 straight shaft and 1/4 keyway - Predator 8 HP (301cc), Tecumseh OHSK70, Honda GX240, etc ●Bi-Directional ► This 1 B 14T clutch with built-in 1/4 key can run clockwise or counter clockwise and can be mounted inboard or outboard on straight shaft with no adjustments needed ●Smooth Engagement ► This go cart clutch is made of high grade cast-steel with black oxide finish. The six sintered shoes are design for less drum distortion and smooth engagement ●Important ► Tips for better performance: 1, cool and lubricate the minibike clutch after every 2 hours of operation. 2, rear tires with a diameter exceeding 15 tall should not be used. 3, do not drive in abusive conditions like excessive weight in the kart