RK 520Xru Roadracing UW-Ring Chain Designed for the pinnacle of MotoGP racing, 520Xru Chains are the choice for professionals seeking excellence. These lightweight racing chains, with their innovative UW-Ring seals, ensure reduced friction and the preservation of horsepower from start to finish. Engineered in partnership with leading MotoGP and World Superbike teams, they strive to deliver peak performance and durability on the racetrack. Features: Thin, lightweight UW-Ring seals Developed in collaboration with MotoGP and World Superbike teams Includes rivet-style master link Specifications: Tensile Strength: 9,000 lbs Max CC Rating: 1,000cc Max Horsepower: 265 Weight: 3.44 lbs / 100 links Note: 520Xru chains are intended for roadracing use only! Not to be used for daily street use.