RK GB428MXZ4-134 Gold Pro MX Chain yamaha DuPont™ Kevlar® and fiberglass

DuPont™ Kevlar® and fiberglass

Cycra designed in USA with top factory racers

UFO Complete Body Kit (Black) Yamaha YZF250 19-23 YZF450 18-22

XL 125 K2 (1978)

RK GB428MXZ4-134 Gold Pro MX Chain yamaha DuPont™ Kevlar® and fiberglassGold 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