Centrifugal Clutch 3/4″ Bore 12T, #35 Chain, Sprocket Go Kart Predator 212cc 210 Clutch Teeth: 12T Bore Size: 3/4 inch Compatible Chain Size: #35Engagement Speed: 2000??100 RPM Horse Power: Up to 6.5 HPKeyway: 3/16 inch Outside Diameter: 4.22 inch 3/4″ Bore 12 Tooth Centrifugal Clutch is perfect for Honda GX160 Honda GX200 Harbor Freight Greyhound 196cc Harbor Freight Predator 212cc. GC160,GC190,GX120,GX140. It also fits nearly all motors between 2-6.5HP with all brands. Two Set Screws are included in the bag, please open the bag with caution, it may drop out. Chain: 35# 116 Links Rear Sprocket: 58T 29mm , 65T 37mm, 75T 37.5mm Motor Sprocket: 11T Package includes the stuff you choose from the dropdown box inkfrog terapeak