The pinnacle in road and mountain bike braking, SHIMANO Dura ace and XTR RT-MT900 disc brake rotors deliver superb stopping power for the most aggressive riding. The ICE TECHNOLOGIES FREEZA rotors dissipate heat to maintain braking performance on long downhill stretches. SHIMANO's CENTER LOCK mounting system makes installing and removing rotors quick and easy thanks to the spine mount and lock ring design.

Specifications
High-performance and consistent brake performance
Stable and versatile brake performance in the most demanding conditions
New ICE TECHNOLOGIES FREEZA construction for boosting heat dissipation
Surface temperature cooled by -20°C (vs RT99, 203 mm)

Mfr Claimed Weight
89g (140mm)
108g (160mm)