The design of the Shimano XTR RT-MT900 brake discs is a further development of the successful Ice-Technologies Freeza construction. While the improved weight reduction of 5 or 10 grams of the 140 or 160 mm discs represents a particular advance, the 180 and 203 mm versions were characterized in intensive tests by a further improvement in heat dissipation of 20 °C and are also pleasantly restrained on the scale (203 mm: minus 30 grams). This effective heat management while braking is achieved by the sandwich structure (stainless steel - aluminium - stainless steel) improving braking performance and reliability. The result is first-class and consistent braking even in the most demanding conditions.
Stable and versatile brake performance in the most demanding conditions
High-performance and consistent brake performance
New ICE TECHNOLOGIES FREEZA construction for boosting heat dissipation
Disc diameter: 180 mm
Weight: 133 g
Ice technology Freeza(Radiator fin)
Alloy lock ring (included)
Compatible with Metal and Resin brake pads
ICE TECHNOLOGIES and FREEZA - provide consistent braking performance with longer pad life, less brake fade and noise. The lightweight and highly efficient three-layer sandwich structure of stainless steelaluminumstainless steel enhances heat dissipation.
The CENTER LOCK system - makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.