The Shimano RT-CL800 Disc Rotor offers superior braking with its 140mm size and Ice-Tech Freeza technology. Its sandwich construction of stainless steel and aluminum enhances heat dissipation for consistent braking, even on steep descents. The rotor features a reinforced alloy carrier and optimized arm shape for a smoother, quieter ride. The Centerlock mount ensures easy installation. Weighing about 96 grams, this rotor is built for durability and longevity, making it ideal for serious cyclists seeking reliable performance.