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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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Backorder: This item is currently not in stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

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 

Ordered by Most Relevant First
5 stars
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Top notch looks and performance with the latest Dura-Ace rotor
by MW

Great and lightweight Dura-Ace rotor. Seems to have an improved design to prevent warping, though I haven't experienced any warping on prior generations. Great quality as always from Shimano

Reviewed 4/28/2023
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Excellent Shimano quality
by Roger
Cycling Enthusiast
Portland OR

Used this to replace my front rotor, which had worn thin. Works great!

Reviewed 12/8/2022
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