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.

Note: Centerlock discs are not compatible with 6-bolt disc rotor mount.


Stable and versatile brake performance in the most demanding conditions
140 mm, 160 mm, 180 mm, 203 mm
High-performance and consistent brake performance
New Ice Technologies Freeza construction for boosting heat dissipation
Rotor size


Material Stainless steel, aluminium
Weight approx. 90 gram (140 mm)
approx. 108 gram (160 mm)
approx. 133 gram (180 mm)
approx. 149 gram (203 mm)
(manufacturer's specs)
Disc Centerlock

What's in the Box?

1 disc incl. lockring

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