Shimano Ultegra SM-RT800 Disc Brake Rotor
CENTER LOCK, ICE TECHNOLOGIES FREEZA
160/140 mm
Average weight:  108g (140 mm)

With the ICE TECHNOLOGIES FREEZA construction, SHIMANO ULTEGRA SM-RT800 disc brake rotors provide consistent braking performance in all conditions. As a result of the SM-RT800's better heat management, the brakes are more resistant to brake fade on long downhill stretches. With the spine mounting and lock ring design of SHIMANO's CENTER LOCK mounting system, rotors can be easily installed and removed.