Chain for MX and SM. Golden. Without seals.RK 520MXU 120 STEPS GOLD
RK 520MXU 120 STEPS GOLD
Ultra-thin sealing chain for enduro
The RK 520MXZ is the lightest sealed ring enduro/motocross chain available on the market today, at 13.8g/link, just 0.1g/link heavier than the RK 520MXZ4.
The MXU series is the next generation of enduro/motocross racing chains that feature RK's only ultra-thin seal technology, U-rings or UW rings, making it possible to design a sealed chain with
the weight of an unsealed chain. Sealing rings prevent debris from entering the chain.
which ensures the efficient transmission of horsepower from the engine to the
rear wheel throughout the life of the chain
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