Centrifugal Clutch 1″ Bore 14 Tooth for 40-41-420 Roller Chain(chain not included) 1″ bore designed for 6.5hp 212CC engines, Fit for Go Kart and Mini Bike,Lawnmower Made of high quality iron material, lightweight, sturdy, durable, maximum torque, wear-resisting and fast heat disation, very popular Kart /Buggy Market NOTE : The clutch is designed to be able to move a certain amount of weight. Once the weight limit is exceeded, then the life of the clutch will be shortened. Please make sure the total weight of the kart and driver and passenger will not exceed 400 pounds (Average weight limit for most clutches) We offer you three months warranty, you can buy it with confidence Size:14 ToothCentrifugal Clutch 1″ Bore 14Teeth Perfect for Go Kart Mini Bike. (Chain Size: #40/41/420) This clutch is used primarily on Mini Bikes and Go Karts centrifugal clutch assembly with 1″ shaft and 14 tooth 40/41/420 chain sprocket just may be the perfect missing item for your serious gar