Upgrade your braking system with the Shimano Disc Brake Rotor RT-MT800 w/Lock Ring. Engineered with precision and equipped with the Ice Technologies Freeza heat management system, these lightweight and compact disc brake rotors deliver rapid heat dissipation, ensuring consistent braking performance during intense rides. Ice Technologies Freeza - Enhanced Heat Dissipation: Shimano's innovative Ice Technologies Freeza system ensures rapid heat dissipation, preventing brake fade during prolonged descents and aggressive riding sessions. Experience reliable and consistent braking power, allowing you to maintain control and confidence on any terrain. Compact and Lightweight Design: The Deore XT RT-RT800 disc brake rotors boast a compact and lightweight design, reducing rotating mass and enhancing your bike's overall agility and responsiveness. Enjoy nimble handling and smooth maneuvering on the trails with these high-performance rotors. Center Lock Design for Quick Installation: Installing and removing the rotors is a breeze with Shimano's Center Lock design. This user-friendly system allows for quick and hassle-free assembly, saving you time and effort while ensuring a secure and precise fit. Choose from a range of sizes - 203mm, 180mm, 160mm, and 140mm - to match your specific riding style and terrain requirements. The Deore XT RT-RT800 rotors provide versatility, making them suitable for various mountain biking adventures.