MXU Chains

Ultra Thin Seal Chain for Enduro

RK 520MXU is the lightest Sealed-Ring enduro/motocross chain available in market today, 1483.8g/link, only 0.148g/link heavier than RK 520MXZ4.

MXU series is the next generation of enduro/motocross racing chains featuring RK's exclusive technology of Ultra Thin Seal, U-Rings or UW-Rings, make possible to design a Sealed Chain with the weight of a Non-Sealed Chain. Seal Rings prevent debris to enter the chain which ensures the efficient horsepower transmission from the engine to the rear wheel throughout the chain life.