Auto Express CENTRIFUGAL CLUTCH 3/4 BORE #35 CHAIN 12T FOR GO KART MINI BIKE ENGINE 3/4 BAR Go to amazon.com Related posts Top predator engines for 2022 FeatureHigh Quality Clutch3/4" Bore35# Chain12 Tooth DescriptionThis is a high quality, centrifugal clutch that is suitable for numerous applications. This clutch is 3/4" bore and 12 tooth for 35 chain.