• 03-22-2020
    PoorInRichfield
    2 Attachment(s)
    Shimano XTR Disc Rotors on Dura Ace or Ultegra?
    Since this is the weight weenie forum...

    Do Shimano XTR disc rotors work on Dura Ace or Ultegra disc brakes? If so, is there any issue with using them on road bikes?

    I ask because the XTR rotors are a few grams lighter than the Dura Ace and Ultegra rotors (the latter two weigh the same). I'm assuming the weight difference is due to there being smaller cooling fins on the inside of the rotor.

    Unless you're riding in the mountains, I can't imagine one would have any issues switching to the XTR rotors with the smaller fins?

    SHIMANO XTR RT-MT900
    Claimed Weight: [140mm] 90g, [160mm] 108g

    https://forums.roadbikereview.com/at...d=327299&stc=1

    SHIMANO Dura-Ace SM-RT900
    Claimed Weight: [140mm] 96g, [160mm] 119g

    https://forums.roadbikereview.com/at...d=327297&stc=1
  • 03-22-2020
    rideit
    They will work just fine.
  • 04-26-2020
    JBarney
    Yes, but the Dura-Ace look sooooo sweet... sticking with them. :)