Product Review

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
• Center-Lock only