RK 525Xre Chain The RK XRE series chains, an advancement over the XSO line, offer a 20 improvement in wear life thanks to their innovative XW-sealing rings. These rings create dual lubrication pools, enhancing protection against high-speed abrasion and blocking the ingress of dirt and debris into the chain's interior components. Available in 520, 525, and 530 pitch sizes, the XRE series exemplifies a perfect harmony of high tensile strength and lightweight design, all while extending the durability of the chain. Features: Perfect for street, touring, and off road applications XW-Ring provides superior protection against dirt, debris, abrasion, heat buildup and lubrication loss Made in Japan Rivet type master link included Specifications: Tensile strength: 9400 lbs Max CC rating: 1000cc (street and offroad) Max horsepower: 200hp