Pair of Shimano RT-MT800-S Ice Tech Centre-Lock Disc Brake Rotors, including centre lock rings, taken off a new set of wheels I’m not using. Sitting at Ultegra / XT level in Shimano’s hierarchy, the RT-MT800 Internal Lockring Ice Tech Center Lock Disc Brake Rotor is designed to dissipate heat as much as possible for better, more consistent braking performance.
