Shimano SM-RT70 105 Ice Tech Centrelock Disc Brake Rotor | Fits 105 R7000, Ultegra R8000, Dura-Ace R9100

Shimano have applied their Ice Tech technology to the Shimano 105 SM-RT70 rotor. The rotor is constructed from a layer of steel and aluminium, and the use of two materials help dissipate heat incredibly quickly and ensure brake power does not fade.