Rotor Shimano CL800LE Center Lock 203mm SilverQuieter control for any terrain With a focus on decreasing disc brake rotor heat deformation, Shimano delivers a new disc brake rotor thats quieter than ever. The centerlock 800 rotors provide performance without sacrificing weight or heat dissipation. A quieter, more consistent centerlock rotor from the experts at Shimano. Quieter than ever and with superb, consistent braking performance on any long, steep descents The new arm shape is more robust