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

ice ice baby!!!!

  • Familiarity: I've put it through the wringer

stopping power and then some!!!!!

nothing but ice!!

  • Familiarity: I've put it through the wringer

203mm on everything, wanna stop?

Quiet and easy

    The iceshield on these rotors keeps them very quiet even after hours of use on downhill runs. Easy to install.

    Great Rotor

      These rotors paired with Shimano brakes are outstanding. If you want increased braking power, especially on longer descents, get these! Also- getting a larger rotor will help with increased braking power, just make sure you have the proper adapter for your bike if you’re increasing the size of the rotor. I would be hesitant to mix and match rotors and brake calipers of different brands (Shimano/SRAM/Magura) because of different rotor thicknesses…I would definitely recommend if you currently have lower end Shimano rotors or are just looking to replace your XT rotors.

      Go to rotor

      • Familiarity: I've put it through the wringer

      These are the only rotors I'll run on the mountain bike! Feel free to shoot me an email at jdraper@backcountry.com if you don't know which size is going to work best for you!

      New rotors are the best!

      • Familiarity: I've put it through the wringer

      Having new rotors AND new brake pads is like having new brakes.
      Love it!

      super reliable

      • Familiarity: I've put it through the wringer

      For the money the XT rotors can't be beat. great longevity, great braking power, have not had any heating issues. Highly recommended.

      Reliable Quality

      • Familiarity: I've put it through the wringer

      I usually use SLX rotors but these work great too for not much more money. Are they lighter, faster, better? Probably, I don't know, the difference isn't too noticeable for me personally but if you are heating up your brakes frequently, these should dissipate that heat better.

      Stopping Power

      • Familiarity: I've put it through the wringer

      If your using 6 bolt hubs these are the shimano rotors of choice.

      The Best!!!!

      • Familiarity: I've put it through the wringer

      If you are using Shimano brakes, you better use their rotors! They work the best.

      Buy Shimano

      • Familiarity: I've put it through the wringer

      If you want your bike to stop...buy 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=better

          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.