RK Chain BL525ZXW-120L XW-Ring - Black ScaleRK ZXW Series were developed to meet the spec of the latest models of extreme superbike 1000cc and above. RK ZXW series features RK's only technology of XW Ring, which has 2 lubrication pools and 3 contact lips, a triple barrier structure to further seal the lubrication and prevent debris to enter the chain. RK ZXW Series are designed to be the strongest, long lasting chain available on today's market, with highest tensile strength of RK series and
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