RK Racing Chain GB525GXW-116 Gold 116-Links XW-Ring Chain with Connecting Link Sealed XW-Ring chain features heat treated hi-carbon alloy steel components with seamless rollers and shouldered bushings XW-Ring is made of an advanced nitrile butadiene composite featuring three contact lips and two convex outer stabilizers; this means three lubrication pools to protect against high speed abrasion, extreme heat build-up, torsional flex and loss of lubricant XW-Ring chains are the best high-speed, extreme heat performance chains available today The XW-Ring provides the user with a 50 percent longer wear life than basic O-ring chains GB525GXW has a maximum tensile strength rated at 9,300 foot pounds and is suitable for up to 1100cc street bikes and 800cc dirt bikes