RK 520/525/530XSO are designed for Middle displacement Motorcycle Models, lighten chain weight while securing adequate strength required, emphasizes light feeling of acceleration. RK XSO Series features RX-Ring that...
RK 520SO is a Classic ! The best choice if you are looking for an economical chain for motorcycle from 250cc to 400cc. Developed with Polaris ATV with Special Heat Treatment for Off-road Usage."
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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 withthe weight of a Non-Sealed Chain....