RK 520MXZ5 applies the HCR Pin and special alloy steel for component making, resulting in a tensile strength as high as 35.6[kN] with weight as light as 13.7[g/L].

HCR Treatment (High Tech Chromium Carbide Layered Pins) drastically improves the wear resistance of the Pin while absorbing shock loads from extreme jumps.

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520EXW is designed to meet the Extreme requirement of rally races such as Dakar Rally, featuring RK’s only technology of XW-Ring  and improved Thermal Fatigue Resistance.

520EXW features RK’s only technology of XW-Ring, which is a triple barrier to further seal the lubrication but also prevent debris to enter the chain. It is the ultimate solution against the desert sand on Dakar Rally.

520EXW can be applied for Pro ATV with its anti-heat cracking feature due to the special heat treatment that improves the Thermal Fatigue Resistance.

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520MXU is the lightest Sealed-Ring enduro/motocross chain available in market today, 13.8g/link, only 0.1g/link heavier than RK 520MXZ5.

MXU series is the next generation of enduro/motocross racing chains featuring RK’s only 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.

Buy RK MXU Chain

The Reinforced Heavy Duty Chain for Motocross.

520KXZ Series is designed for motocross racer, lighter weight but stronger chain compares to Heavy Duty Chain.

520KXZ features special alloy pins with RK Special HCR Treatment (High Tech Chromium Carbide Layered Pins) for better wear resistance.

Excellent quality and cost performance for motocross riders, available in gold or black.

Tested and developed with top MXGP & MX2 teams!

Buy RK KXZ Chain