Shimano XT SM-RT86 Rotor - 6-Bolt
ShimanoXT 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

Buy Shimano

  • Familiarity: I've put it through the wringer

If you want your bike to these. EASY to maintain too....
Nuff said...

Without a doubt the most reliable brakes

    These are my second pair. I replaced some SRAM brakes on my first bike and now I just replaced some SLX brakes on my new bike. My rider weight is 235 so I need a good brake that doesn't fade on the down hills. This brake has good modulation, power, and I love the one finger lever action. Pair these with the XT rotors and you have a match made in heaven. Did I mention they are also quiet? Well they are! For an all mountain/ Trail brake these will work just fine. They aren't as heavy duty as the Zee or Saints and also not as heavy. If you aren't a down hill rider on weight more than 235 than these will work just fine.

    Great upgrade

    • Familiarity: I've put it through the wringer

    I bought a set, front and rear, for my Bronson, and this is well worth the money spent. The stopping power is a lot higher than it was with the 180mm rotors.


      Two types of metal? Yes, the carrier of aluminum definitely helps shed heat faster than a standard steel rotor. This is a great upgrade for lower end shimano brakes, or a worthy replacement for your XT and up options.

      Choose nothing else.

      • Familiarity: I've put it through the wringer

      I recently built up a 29+ bikebacking rig and knew these were the rotors for the bike. These rotors rid heat really well, I have these rotors paired with some Shimano Zee Brakes and they work hand in hand! Good feeling knowing you have the stopping power, especially being weighted down.

      Choose nothing else.

      Great Rotors!

      • Familiarity: I've put it through the wringer

      These stop fast, cool fast, and make you more comfortable going fast knowing you can stop on a dime!

      Great quality Rotors

      • Familiarity: I've put it through the wringer

      They stop, they cool fast, they work. Not much more is needed to say. Now if only they came in cool colors like Hope Rotors...

      The Only Rotor I Need

        These are great rotors. Stop well, stay cool, and pair perfectly with XT and XTR brakes. Been running these on my bikes for the past 4 years. Very happy with shimano brakes overall.

        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!