Description The Shimano Ultegra SM-RT800 Disc Rotors feature Shimano's Ice-Tech Freeza construction, taking a hybrid of steel and aluminum. For consistent braking performance, even over extended periods of braking, the Ultegra SM-RT800 rotors rapidly to reduce overall temperatures by 50ºC. The all-new design provides better heat dispersion than current road disc systems, with superior heat management over current Ice Technologies Freeza offerings from Shimano.
The Shimano Ultegra SM-RT800 Disc Rotors are Centerlock compatible. Available in two sizes: 140mm and 160mm.
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Reviewed 4/15/2019
by LLaud
Competitive Racer
West Virginia
Value Rating
Overall Rating
Great Product!
Nice finish with great stopping power!
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Reviewed 3/25/2018
by Ivan’s Helix Pro TI
Cycling Enthusiast
Cedar Park, Texas
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0 of 9 customers found this review helpful.
The best customer service I have found
I have ordered complete SRAM RED e-tap HRD, including SRAM Red Crankset 5236. I have been delighted with biketiresdirect.com price and and speed of order fulfillment. I ordered on Friday evening and my order arrived Tuesday morning even thought I am in Austin, Texas area and without paying extra shipping fees. While I have been waiting on my new Helix Pro TI frame from Lynskey, I ordered for about $500,00 tools for bike. Again, help with order, order execution and shipping, every thing went so smoothly with biketiresdirect.com that it was a joy to order from them. One time I hade to modify my order before shipping, and after receiving, I had to return 2 items. Both times, every thing went flawlessly. Even better, biketiresdirect.com sent me replacement part immediately and I got it next day and then in the same box I sent back the original part. All that with no extra charge. I really love and enjoy my Lynskey bike. To build a bike yourself, believe me, its a big project. But with help I have received from biketiresdirect.com, specifically Nathan, it was a joy and a memorable experience. I will recommend them to my friends, other fellow rider and every one else whos in need of anything for bike. I give them 5 stars only because thats the max available. Believe me, they deserve at least 10 stars.
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Reviewed 5/13/2019
by Anonymous
Cycling Enthusiast
Hillsboro, OR
Great stopping power
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.
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