LotFancy Go Kart Clutch 3/4 Bore 10T for 40 41 420 Chain 6.5HP Centrifugal Clutch 3/4" bore, 10 Tooth for 40,41,420 chain, Up to7HP engines. Common clutch for 3.5-7hp engines 2200 RPM Perfect for Go Kart Minibike Baja Mini Bike MB165 and MB200, including Baja Heat, Mini Baja and the Baja Warrior Compatible with 2-6.5hp Honda and Honda Cloned Engines GC160, GC190, GX120, GX140, GX160, GX200 Briggs and Stratton and 2-6.5 HP with 3/4 Shaft Tecumseh Engines Mounts onto crankshaft using bolt and washer on the end of the crankshaft Set screws and chain NOT included