ShimanoUltegra RT-CL800 Disc Rotor(Return to Product Page)

I replaced the rotors and pads, bedded them in properly and now braking is excellent as well as silent.

If you run Shimano brakes, then this is the rotor for your road bike. Sometimes you will get one out of true in the box unfortunately. Other than that, they work good, and are fairly lightweight. Centerlock works good, and the lock ring is included with the rotor.

These rotors are great. They are quiet and have great bite with Shimano pads and calipers. I'm sure they have good cooling (not that I've ever had issues with warped rotors). Oh yeah and they stop great in the wet too. They are the same thing as Dura Ace rotors without the black paint. What more could you ask for?

Thought I had a warped rotor, but I was wrong.While I was waiting for the Ultra rotor to arrive I carefully cleaned the old 105 rotor which fixed the pulsing issue. Since the Ultra rotor had arrived, I went ahead and put it on. Easy installation, you use the same tool as the you use to take off the freehub.

Does it work better than the 105? Who knows? Either one stops the bike. Kinda looks nicer, though.

My road bike rotors were getting thin enough to replace. My bike shop recommended I shop online and bring them in. It was cheaper and fast to order through Bike Tires Direct than for my LBS to order. They arrived quickly and exactly the part needed to replace on my Specialized bike.

The rotor is great, got them to add to a set of Shimano carbon wheels. Lined up perfectly, strong, quiet braking. The description doesn't mention it, but you do get the lock ring and washer with it.

These new ultegra rotors seem to do better in the crosswinds and on the noise compared to my old Ultegra. They seem less susceptible to fade as well on long descents. Recommended if you're updating brake pads or calipers.

Great product + Good sale price = GO!

Product does what it is supposed to do and looks good doing it.

Have had these on multiple bikes for thousands of miles with no complaints.

Needed a set of rotors for my second wheelset. I wanted to keep the components the same. Excellent rotors.

The rotors are used on an All-Road bike, mainly go on (pavement) trails and on occasions off-road on hardpack gravel.

Replaced my gravel bike shimano disc brake rotors with these. Work great. Nice and quiet and quick stopping. Easy to install.

This purchased was for the 160mm version of the Ultegra RT-CL800 disc rotor ... well made, easy to install and of course, it works.

Added these to a new set of Hunt gravel wheels. They fit perfectly and have been excellent so far on my gravel bike. Use with a mix of 105 and GRX components.

These disks (rotors) give excellent braking with super modulation, plus they also look good on the bike.

Added these rotors to a new wheelset I was running these rotors on my "stock" setup, and I have found them to be very reliable. They were easy to install, and they work just as I had expected. Reliable, Shimano quality. No issues.

Perfect replacement for my GRX rotor

Compatible with my 105 system. Easy to install. These rotors work exactly as they are supposed to. I have yet to crash because the brakes did not brake. They look aero too. Probably made me faster. Probably saved me 0.125 watts. Zoom.

Compatible with my 105 system. Easy to install. These rotors work exactly as they are supposed to'.I have yet to crash because the brakes did not brake. They look aero too. Probably made me faster. Probably saved me 0.125 watts. Zoom.