Shimano’s Deore XT RT81 ICE-Tech Disc Brake Rotor delivers reliable stopping performance for powerful and consistent braking in all conditions. The 3-layer construction of stainless steel and aluminum allows heat build-up to radiate quickly through the aluminum core to achieve a drop in surface temperature of around 50°C. Featuring Shimano’s Center Lock system for excellent rigidity and security with an easy set-up. Available in both 160 and 180 outside diameter sizes.