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Shimano Dura-Ace RT-CL900 Disc Rotor
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Dura-Ace RT-CL900 Disc Rotor

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Quieter Control For Any Terrain

The Shimano RT-CL900 Disc Rotor is a Dura-Ace level rotor that brings a focus on decreasing heat deformation resulting in quieter than ever braking performance without sacrificing weight or heat dissipation. These rotors are quieter than ever, but with superb, consistent braking performance on any long, steep descents thanks to excellent heat dissipation.


  • New arm shape is more robust, leading to quieter operation
  • Heat dissipation paint boosts performance
  • Available in 140 mm & 160 mm
  • Centerlock
  • Internal lockring

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

140mm - Centerlock

Mfg PartNum: IRTCL900SSI 

160mm - Centerlock

Mfg PartNum: IRTCL900SI