The pinnacle in mountain bike braking, SHIMANO 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. 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) Rotor size - 160 mm, 180 mm, 203 mm

The Shimano Ultegra BR-R8100 series caliper brakes offer a clear contact feeling while balancing rigidity, weight, and stopping power. With clearance for 28mm tires, the design is still sleek. They are available in traditional and direct mount options. - Exceptional balance of rigidity, weight and stopping power - Maximum tire size is 28C - 51mm reach

Looking for a great brake upgrade for your SRAM or Campagnolo-equipped cyclocross bike? TRP's CX-8.4 linear-pulls are the answer. The 84mm-tall CNC'd-aluminum arms work seamlessly with SRAM and Campy levers, and they deliver outstanding stopping power and speed control while providing ample mud clearance. Plus, the integrated barrel adjuster on the noodle makes those on-the-fly adjustments simple. Feathery titanium hardware keeps weight down, and you'll love the brake-pad holders that make toeing-in and replacing the pads a breeze.

- Top mount levers for use with caliper or cantilever brakes - Forged aluminum - Hinge clamp style - Return spring and reach adjustment - Black - 90g / pair