RK GB428MXZ4-140 Gold Pro MX Chain Mx Helmet Parts Nylon sleeve on clamp body

Nylon sleeve on clamp body prevents front fork scratches

FMF CF End caps for new updated version of 4

Our stainless braided brake lines eliminate that spongy  feeling of standard plastic brake lines

Chest Harness system with Velcro™ elastic bands for flexibility

FX 350-450 17-24

RK GB428MXZ4-140 Gold Pro MX Chain Mx Helmet Parts Nylon sleeve on clamp bodyGold premium MX non sealed 428MXZ4 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