MRU series features RK?s only technology of Ultra Thin Seal, U-Rings, where the thickness of seal is less than 50% of the common seal, make it possible to design a Sealed Chain with the weight of a Non-Sealed Chain.4...
Designed for motocross racer, lighter weight but stronger chain compare to Heavy Duty Chain.non-sealed chainExcellent quality and cost performance for motocross racers 50-150cc."
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