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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