??3/4″ Bore 10 Tooth??This Centrifugal Clutch with a 3/4?? Bore 10 Tooth for #40/41/420 Chain, Common clutch for 2-6.5 HP engines ,Engagement Speed 2300??300 RPM. ??Widely Fitment??Fits Honda GX160, GX200, GX 140, GX120, GC160, GC190, Harbor Freight Greyhound 196cc, Harbor Freight Predator 212cc, Briggs and Stratton Tecumseh engines and 2-6.5 HP with 3/4?? shaft.Also fits any other engines with 3/4 crank shaft and 3/16?? key way, most 5.5 HP clones, 6.5 HP clones and 4-7HP motors in all brands. ??Easy installation??It’s a perfect replacement part for your mini bike,go kart and fun kart.Package included: 1 x Centrifugal Clutch. ??High Quality Materials??Our Centrifugal Clutch is made of high quality iron materials, light weight, durable,portable and fast heat disation. It can reduce engine load and gain more power and save more effort on driving your car and can improve your driving speed. ??Professional Warranty Service??This product supports a 1-year limited warranty and lifetime