ScooterX Centrifugal Clutch - 13 Tooth Sprocket to fit #41 / 420 Chain, 3/4" Bore for Go Karts, Mini Bikes, Drift Trikes, Etc. This go kart clutch fits any horizontal go kart engine with a 3/4" output shaft. Includes a 13 tooth sprocket sized for #41 / 420 chain. Commonly used on 6.5 hp go karts with GX160, GX190 GX200, Harbor Freight Predator, and other Chinese clone engines. This is a complete clutch assembly, with bellhousing/sprocket and new clutch shoes. Specifications: - Fits horizontal engine with 3/4" output Shaft - 13 Tooth sprocket for #41 / 420 Chain - Complete clutch with new bellhousing and friction (shoes) - Centrifugal Clutch (no clutch lever needed) Fits: - ScooterX Drifter - ScooterX Sport Kart This will fit on any 4 stroke horizontal shaft 3-5hp H*nda, Briggs, Predator and all Chinese clone engines, Lifan, Xtreme, etc. with a 3/4" output shaft. These are the most common engines used on recreational go karts. If your engine fits the description above, it will fit!