Shimano XTR RT-CL900 Centrelock Disc Brake Rotor 203mm External Serration

Quieter than ever, but with superb, consistent braking performance on any long, steep descents thanks to excellent heat dissipation

The new arm shape is more robust, leading to quieter operation

Heat dissipation paint boosts performance

3D Aluminum carrier​
Optimised 3D-shaped aluminium carrier is designed purposefully in every single dimension and achieves lightweight and superb heat distortion resistance.
This prevents the entire rotor from deforming due to heat and reduces rubbing noise while riding.

ICE TECHNOLOGIES FREEZA
ICE TECHNOLOGIES FREEZA rotors utilise the 3-layer stainless steel-aluminium-stainless steel sandwich structure to reduce heat buildup. The inner aluminium layer extends inward with a wide exposed radiator fin that boosts its cooling capabilities.

Stay Cool. Keep Quiet. Stop Faster.
ICE TECHNOLOGIES FREEZA rotors deliver next-level braking performance, surpassing our already exceptional ICE TECHNOLOGIES rotors. Their heat-dissipating radiator fins help keep things cooler in extreme conditions to provide stable stopping power with less brake fade and noise.

Aluminium radiator fins boost cooling capabilities to enhance braking performance
ICE TECHNOLOGIES FREEZA rotors feature an extended inner aluminum layer with wide, exposed radiator fins that boost cooling capabilities. Shimano ICE TECHNOLOGIES FREEZA rotors offer an impressive 100°C (212°F) reduction in heat build-up compared to standard stainless-steel rotors and a 40℃ (104°F) reduction in heat buildup compared to our ICE TECHNOLOGY rotors. Our premium rotors also feature a special heat dissipation paint on the fins that can further reduce heat buildup by 10℃ (50F°).