5/8 in. Bore Centrifugal Clutch, #40/41 Chain, 10-Tooth, for Go Karts & Mini Bikes
#40/41 chain, 5/8 in. bore, 10-tooth Clutch. Includes Key and Set Screw. Sintered metal clutch shoes; Smooth positive engagement @ 1,800 to 2,000 rpms; works clockwise or counterclockwise; for 2-1/2 to 7 horsepower 4-cycle engines.