The Shimano RT‑CL800 disc brake rotor was developed with a focus on reducing heat deformation. The result is quiet braking performance without sacrificing weight or heat dissipation, giving riders consistent control on any terrain.

• Consistent braking performance on any long, steep descent thanks to excellent heat dissipation
• Robust arm shape for quiet operation without sacrificing weight or heat dissipation
• Includes lock ring with external serration