Thread: Shimano Brake Rotors - Ultegra vs 105
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Old 02-22-22 | 10:35 AM
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msu2001la
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From: Chicago, IL, USA
What is the difference between XT (MT800) and Ultegra (RT800)? The Ultegra rotor oddly weighs 20 grams more (in 160mm size they are listed as 128g and 108g). The ultegra version might be a tiny bit more aero and has slightly larger cooling fins?

Ultegra RT800 rotor:

The MT800 rotor:
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