Our go-kart clutch is made of high-grade steel heavy-duty and long lasting. It can withstand the strain and heat caused by friction once the clutch engages. Centrifugal Clutch 3/4” Bore 12 Tooth for 35 Chain Common clutch for 2-6.5 HP engines 2300 RPM. The 12T clutch has a broached 3/16 keyway with two set screw holes located 90 degrees apart. Go cart clutch kit are perfect for Go Kart Minibike and Fun Kart. 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.