CFMOTO 0GRB-051000-00030 Primary Drive Clutch Assembly

The 0GRB-051000-00030 primary drive clutch is a critical CVT transmission component engineered for CFMOTO single-cylinder engines including the 191R, 191Q, and X550 series. This drive pulley variator assembly manages belt engagement and speed ratio changes through centrifugal force actuation. Constructed from high-strength aluminum alloy, the unit features precision-machined sheaves and balanced flyweights to ensure smooth power delivery and eliminate belt slippage under high torque loads. It serves as a direct replacement for OEM part numbers 0GRB-051000-10020, 0GRB-051000-10021, 0GRB-051000-10030, 0GRB-051000-20040, and 0GRB-051000-00071. Application covers CFORCE 400, 450, 500, 550, 600, ZFORCE 500, and UFORCE 500 models from 2015 onward. Installation requires a specific clutch puller tool (OEM 0JY0-050000-922-002) for removal of the fixed sheave. Regular inspection of roller weights, bushings, and sheave surface condition is recommended to maintain CVT efficiency.