Can-Am 420280467 Primary Drive Clutch Outer Half Assembly

The 420280467 is a genuine BRP Can-Am OEM primary drive clutch outer half assembly, also identified as a drive sliding sheave assembly or half-outer assembly. This component forms the movable sheave half of the primary (drive) clutch in the continuously variable transmission (CVT) system. It transfers engine power to the drive belt through centrifugal actuation of the clutch weights and spring. The assembly includes the aluminum outer sheave housing with integrated governor cup and bearing surface. It interfaces with the primary clutch inner half (part numbers 420248233, 420280374, 420280245), clutch weights (420248681, 420248496), spring (420239134, 420238617), and cover assembly (420280522, 420280157, 420280159). The unit is manufactured to BRP specifications for dimensional accuracy, material hardness, and dynamic balance. Cross-reference interchange includes superseded and alternate BRP part numbers: 420280313, 420280391, 420280460, 420280465, 420280247, 420280522, 711257194, 420238615, 420248607, 420257195, 420280374, 420280173, 420280178. Aftermarket replacements are available from multiple suppliers.