RK Racing Chains have been chosen by more FIM World Championship teams and AMA World Superbike/Super-Sport Teams than any other chain in the past 25 years! The XW-Ring is made of an advanced Nitrile Butadiene composite and features three contact lips and two convex outer stabilizers. This produces three lubrication pools to protect against high speed abrasion, extreme heat build up, torsional flex, and loss of lubricant. Nitrile Butadiene composite is oil and contaminant-resistant and the XW seal design is compression and distortion resistant, to provide the ultimate in efficiency and performance with absolutely no o-ring drag.

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