The Shimano Deore XT RT-MT800S Ice Tech rotors offer excellent performance with a stainless steel/alloy 3-layer sandwich construction for heat management. This design allows heat to dissipate quickly through the aluminum core, reducing surface temperatures by approximately 50°C. When paired with Ice Tech pads, surface temperatures can drop from 400°C to 300°C, significantly improving overall performance. Key features include long pad life, reduced noise, and less fade due to improved heat dispersion. The proven Shimano Center Lock system ensures excellent rigidity, security, and easy setup. The rotor contact surface is designed for superior pad clearing and cooling, enhancing pad performance and lifespan. It also features a large forged alloy spider that supports the rotor surface, increasing rigidity and reducing weight. Comes complete with alloy lockring.