Description As cold as ice.
Featuring a new Ice-Tech FREEZA design, these Ultegra RT-800 Center Lock Disc Rotors are designed to provide superior heat management for serious road cycling with disc brakes. Whether you're out for a white-knuckle descent or an ultra-distance ride through the hills, these rotors hybrid steel and aluminum construction rapidly dissipate heat for a 50ºC cooler rotor surface.
The Shimano Ultegra SM-RT800 Disc Rotors are Centerlock compatible. Available in two sizes: 140mm and 160mm.
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.
Reviews Ordered by Most Relevant First
5 stars
4 stars
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1 stars
Excellent product
Excellent product. I feel confident when stopping. It arrived quickly.
Reviewed 7/29/2020
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Great stopping power
by Anonymous
Cycling Enthusiast
Hillsboro, OR
When one of my rotors was fouled with hydraulic fluid I upgraded both to Ultegra. They work very well and the center lock design makes them very easy to install with just a cassette tool and chain whip.
Reviewed 5/13/2019
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great disc for the price
by Caboose
Competitive Racer
Raleigh, NC
These rotors are perfect for those not willing to cough up the extra for the SMRT900s.
Reviewed 3/26/2019
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Works to slowstop the bike.
by B''ham Biker
Bellingham
Works well, however after a month or so, starting to have a slight squeal. Not too bad so far.
Reviewed 6/22/2020
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A big upgrade from the original rotors.
by Anonymous
Cycling Enthusiast
Use these are my road bike for all outdoor riding. Great on quick stops even after riding through some puddles. I would definitely purchase again.
Reviewed 6/19/2020
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Nice new design
by Anonymous
Cycling Enthusiast
NYC
Love the new design. Performance is excellent. No complaints. Maybe slightly less aero from the side? Seems like the old design had more cutouts that might catch crosswinds less... but I have no scientific date to back this up.
Reviewed 5/9/2020
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Great Product!
by LLaud
Competitive Racer
West Virginia
Nice finish with great stopping power!
Reviewed 4/15/2019
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Not much to say Ultegra quality, as expected
by Anonymous
Cycling Enthusiast
Boulder, CO
Mounted on a gravel bike that sees a fair bit of road use. Easy to install, no issues. Didnt think the Dura Ace version was worth the extra for a few grams weight savings.
Reviewed 11/21/2019
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Excellent disc rotors
by Dan
Cycling Enthusiast
Allyn, WA
Typical outstanding Shimano quality. Great braking control and modulation.
Reviewed 5/16/2019
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