Shimano XT SM-RT86 Rotor - 6-Bolt

Stays cooler so you stay in control.

Shimano’s XT Brake Rotor, the SM-RT86, sets itself apart from Shimano’s lower-tier offerings through its use of an aluminum core to transfer heat away from the brake caliper. This, combined with the finned heat sinks in Shimano’s XT and XTR-level brake pads, combats heat-related brake fade. What that means in trail terms is consistent, reliable braking, even on long, technical descents.

  • A workhorse brake rotor for XC, trail, and all-mountain use
  • IceTech steel/aluminum sandwich dissipates heat
  • Aluminum spider further contributes to heat management
  • Reviews
  • Q & A

Great Rotors

  • Familiarity: I've used it several times

I bought these rotors to replace the front rotors on me trike. I am 230 lb and the trike is about 45 lb. On a down hill run over 20 MPH It takes a lot of braking power. These the rotors get the job done with out a problem.

Awesome Rotors

  • Familiarity: I've put it through the wringer

Awesome design that is very stiff, quiet and quite light. Can't go wrong with these.

Stops Well

  • Familiarity: I've put it through the wringer

Easy to install and it stops my bike


    These are a great complement to XT brakes. Their Ice Tech construction readily dissipates heat and staves off brake fade on long descents.

    Brakes they got to feel good

    • Familiarity: I've put it through the wringer

    It's the best feeling to have new rotors and pads. Smooth, firm, quiet braking.

    They are light and they stop

      These are good and regular and reliable🌠


        These rotors are outstanding. I put these on my 2017 Giant Trance 2 and they work great. Incredible stopping power. I have not felt any brake fade with these rotors. You can not beat the price of them either. You can buy two of them from Back country for the price of one at a local bike shop. Very pleased with my purchase.

        Shimano Breaks are awesome

          Shimano is the industry leader in this category. Works perfect every time.

          Brakes just slow you down

          • Familiarity: I've put it through the wringer

          so you might as well have an inexpensive but well working rotors to help out of those OOC situations


            They work really well! Does the trick.

            Brakes are good, m'kay

            • Familiarity: I've put it through the wringer

            If you want your bike to stop, buy Shimano brakes.

            Braking Power

            • Familiarity: I've put it through the wringer

            Love these rotors! They last a long time and work great! Finally had to buy a replacement for my older 2014 bike, so 3 years of abuse seems pretty decent for someone who probably uses her brakes too much! Good price for the quality as well!

            Why are there other rotors?

            • Familiarity: I've put it through the wringer

            This rotor is great. Maybe not quite as fancy as XTR, but also a good bit cheaper. And the heat dissipation is still pretty dang good. I've used a ton of these on my different bikes over the years

            Pretty excited

              I bought these to put on a new build for a Yeti SB6 and am excited for the upgrade from the build of my old SC Bronson. It is the middle of winter here in Park City so it will be a while before I get to reap the benefits of the upgraded build on a new bike, but im excited to get out there soon!

              Great Power to Coolness Ratio

              • Familiarity: I've put it through the wringer

              Cools well without sacrificing braking power.

              Great upgrade

                If you are looking for a relatively inexpensive upgrade to your cherished ride, look no further. These rotors are an easy self-installation project and you will immediately notice increased stopping power.

                IceTech IS Worth it!

                • Familiarity: I've put it through the wringer

                Hard to beat Shimano brakes on the MTB. Was having problems with the non-IceTech rotors on some of the long descents in Pisgah loosing stopping power and feeling mushy. Simply changing to IceTech rotors fixed my issues instantly. Can't beat that!


                  Ice Tech really avoid over heating

                  Stay calm by staying cool

                  • Familiarity: I've put it through the wringer

                  Want your brakes to work even when you're over working them? Get these. The Ice tech rotors cool faster for better continuous performance. Want more power? Get the larger rotors. I've been running these on different bikes for many years and still can't find a complaint.

                  Cool Rotors

                  • Familiarity: I've put it through the wringer

                  Shimano's Ice Tech really does help keep your brakes from over heating.