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
- 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.
Brake Pad Type: Disc
Brake Parts: Rotor
Brake Type: Disc
Hub Compatibility: Center-Lock
140mm - Centerlock
Mfg PartNum: IRTCL900SSI
160mm - Centerlock
Mfg PartNum: IRTCL900SI
I'm very late to the disc brake party. I've had a decent commuter bike with discs and appreciated how big a difference they made versus rim brakes, especially in wet weather but my commute doesn't really stress out the system. I recently bought a speedy Italian bike, though, and decided to pick it up over there and tour the Dolomites then hit the Alps. I can't say enough about how much better descents are with these. Excellent stopping power, smooth modulation, no noise, and no issues even as I got more and more aggressive.
Replaced my Ultegra discs with these new version Shimano Dura Ace discs after Ultegra disc were used up.
These Dura Ace disc were absolutely flat, no variation from true within the brake pads.
Very pleased with their performance.
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
2017 Specialized Roubaix just passed 38,000 miles and this is the third back rotor for the bike. I live in Sparks, Nevada, and enjoy many significant downhill decents in the area. Good braking is a necesity when decending from Ebbetts and Monitor Passes, and I find these rotors prevent brake fade. I weigh 200 lbs and the back rotor is only 140 mm so it gets severly punished. I stayed with the Dura Ace model as I prefer black to the silver of the Ultegra version. It will last for several years so I am willing to pay a little extra. Overall a good rotor.