China 12 Teeth 20mm Dia. Hole Centrifugal Clutch for 168f 170f 6.5HP 7HP Predator 212cc Small Gasoline 4-Str. Gokart Racing Engine to Match with 350# Chain, Find details about China Centrifugal Clutch, 12t. Clutch from 12 Teeth 20mm Dia. Hole Centrifugal Clutch for 168f 170f 6.5HP 7HP Predator 212cc Small Gasoline 4-Str. Gokart Racing Engine to Match with 350# Chain