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Engineered for sustained braking on high-speed descents, the Shimano RT-CL900 Center Lock rotor manages heat to reduce deformation for quieter, more consistent braking. An updated arm profile and heat-dissipating paint maintain performance without adding weight.

Improved Heat Management

ICE TECHNOLOGIES FREEZA painted radiator fins dissipate heat for consistent braking on long descents.

Quieter Braking

A revised arm shape reduces noise at speed.

Specifications

  • Model: Shimano XTR RT-CL900
  • Size: 180mm
  • Mount: Center Lock (lockring included)
  • Cooling: ICE TECHNOLOGIES FREEZA
  • Available sizes: 140 / 160 / 180 / 203 mm