The Shimano RT‑CL900 is Shimano’s flagship disc brake rotor, engineered for quieter braking and exceptional heat management on long, steep descents. With advanced ICE TECHNOLOGIES and FREEZA construction, it delivers consistent performance, longer pad life, and reduced brake fade in all conditions. Center Lock disc brake rotor ICE TECHNOLOGIES 3‑layer stainless steel/aluminum construction for superior cooling FREEZA heat‑dissipating fins with heat‑dissipating paint for enhanced thermal control New, more robust arm shape for quieter operation Designed for both road and mountain bike braking systems Compatible with metal or resin pads Lockring included Rotor weight varies by size (example: 114 g for 160 mm)
