RK GB420MXZ4-132 Gold Pro MX Chain Chains lubrication is guaranteed by the

lubrication is guaranteed by the copper particles

Holds the clutch assembly to help prevent basket damage during servicing

KX85 01-25

The all-new start-voltage sensor allows the GENIUS to detect and charge dead batteries as low as 1-volt

RK GB420MXZ4-132 Gold Pro MX Chain Chains lubrication is guaranteed by theGold premium MX non sealed 420MXZ4 drive chain. One of the lightest and strongest MX chains from RK. The lightest and strongest Motocross chain from RK. The MXZ4 is the next generation of motocross racing chains featuring Chromoly steel construction and seamless rollers and bushings. Made for the professional motocross racer. Features special alloy pins with RK special HCR Treatment (High Tech Chromium Carbide Layered Pins) which drastically improves