Shimano RT-MT900 Disc Brake Rotor Ice Tech Freeza - Centre Lock - 160mm. Size: 140mm. Shimano RT54 Disc Brake Rotor - Centre Lock - 180mm. Rotors are durable lightweight and rigid, using the proven Shimano Centre-Lock system giving increased strength and security with an easy set-up Precision cut and drilled braking surface improves pad clearing while aiding cooling under high load.
