Centrifugal Clutch Assembly - 3/4 Bore, 12 Tooth for Go-Karts and Mini Bikes - Version 51 108799 27 in) wide

27 in) wide

The "B"  engine has 57mm spacing on the cylinder head stud holes

16mm threaded nipple on bottom for petcock

Bull 150 and 200

61 tooth gear

Centrifugal Clutch Assembly - 3/4 Bore, 12 Tooth for Go-Karts and Mini Bikes - Version 51 108799 27 in) wideCentrifugal Clutch Assembly 3 4 Bore 12 Tooth for Go Karts and Mini Bikes Version 51 Clutch assembly is a centrifugal clutch for go karts and mini bikes. Clutch details: 3 4 Bore 12 Tooth Teeth Uses #35 chain Known to fit 6. 5hp engines with 3 4 inch shaft including Harbor Freights Predator 212cc engine. Check pictures and measurements to be sure this is the correct clutch for your application.