Shimano Deore XT SM-RT86 Disc 6-Hole

DEORE XT Ice-Tech rotors (160, 180 and 203mm) have a three layer sandwich structure of an aluminum core embedded in stainless steel. The higher heat dissipation of the aluminum helps to reduce the surface temperature of the rotor by around 100 degrees Celsius. Optional Ice-Tech brake pads with aluminum cooling fins can reduce the brake pad surface temperature by another 50 degrees. The result is high stopping power and practically no signs of fading!