RK 520Xre Chain The RK XRE series marks a significant advancement from the XSO range, featuring a 20 enhancement in wear life. With the integration of XW-sealing rings, this series creates dual lubrication pools to protect against high-speed abrasion and prevent dirt from entering the inner rollers and bushings. Designed for the demanding needs of bike chains, the XRE series combines precision engineering with robust durability for optimal performance. 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: 8200 lbs Max CC rating: 800cc (street and offroad) Max horsepower: 130