Want longer pad life, less noise, less fade and lighter weight? Then the Shimano XTR SM-RT99 180mm Disc Brake Rotor with Ultimate Freeza Ice Technology is for you. The clad rotor blade, which has a 3-layer sandwich structure of stainless steel, aluminum and stainless steel, incorporates aluminum fins to significantly reduce heat build-up in the brake system. This reduces fading, which ensures consistent high performance, even on long downhill stretches. It also results in a longer pad life and substantially quieter braking.
Ultimate Freeza Ice Technology:
Increases surface area for heat dissipation
Rotor achieves a 50 C reduction in heat
20% increase in braking force durability
20% longer pad life
Clad rotor with a 3-layer construction (stainless steel/aluminum/stainless steel) and radiator fin structure achieves heat management more efficiently
40 C reduction in heat versus SM-RT98
Better than SM-RT98 at the super high level of Velotech test
Lightweight adapter
2-piece structure for rigidity and lightweight (aluminum adapter and rotor)
Mud-shedding rotor blade design extends rotor and pad life