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.
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Brake Type: Disc | |
Brake Pad Type: Disc | |
Hub Compatibility: Center-Lock | |
Brake Parts: Rotor | |
140mm - Centerlock | Mfg PartNum: IRTCL900SSI |
160mm - Centerlock | Mfg PartNum: IRTCL900SI |
Both rotors were just out of spec, and I was debating whether to replace replace them. I am not a bike mechanic, but with the right tool it was very easy to remove the old rotor and put on new ones. Note that the front and rear rotor on most bikes are different sizes. I was surprised how much improvement it made in the stopping ability. I've been using them for a couple of months and so far, no warping.
Both rotors werejust out of spec, and I was debating whether to replace them. I am not a bike mechanic, but with the right tool it was very easy to remove the old rotor and put on new ones. Note that the front and rear rotor on most bikes are different sizes. I was surprised how much improvement it made in the stopping ability. I've been using them for a couple of months and so far, no warping.
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.
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.
Bought this to replace my stock ultegra rotors. Can't seem to perceive the improved heat management but my comparable XTR rotors on XC bike seem to last forever. Also, bling factor was main decision driver, now I get a lot of "WOW where did you get that?" that add a couple more watts to my rides. Would recommend.
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
