China 18t. 20mm Dia. Hole Centrifugal Clutch for 168f 170f 223cc 225cc Predator 212cc Small Gasoline 4-Str. Gokart Racing Engine to Match with 35# Chain, Find details about China Centrifugal Clutch, 18t. Clutch from 18t. 20mm Dia. Hole Centrifugal Clutch for 168f 170f 223cc 225cc Predator 212cc Small Gasoline 4-Str. Gokart Racing Engine to Match with 35# Chain