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  • Shimano XT SM-RT86 Rotor - 6-Bolt
  • Shimano XT SM-RT86 Rotor - 6-Bolt Detail
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ShimanoXT SM-RT86 Rotor - 6-Bolt
Sale 19% Off$34.95 - $48.00

Item # SHI001B

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  • One Color, 160mm ($34.95)
  • One Color, 180mm ($39.95)
  • One Color, 203mm ($48.00)
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Item # SHI001B
Description

Stay frosty.

Functionally, XT SM-RT86 Disc Brake Rotors stop equally in comparison to Shimano's apex XTR line. That's because of IceTech, a shared technology on both models. The difference between the two lies in a slightly lighter XTR spider that's reserved for gram-obsessed racers. Weight difference aside, the XT rotors provide the same cooling benefits to help your brakes stay frosty and on point when you're testing the ragged edge for extended periods of time.

In reality, most of us aren’t going to feel the benefits of a few grams lost when they're so centrally located to the hub. However, what we are going to profit from is the three-piece Ice Tech Rotor. It is essentially two pieces of steel optimized for friction sandwiched over an aluminum core.

This means Shimano is utilizing the high thermal conductivity of aluminum, where other manufacturers solely use steel throughout the braking surface. Additionally, the quicker cooling alloy core more efficiently transfers heat to the alloy spider. The resulting cooler operating brakes will last longer and provide more consistent stopping in the most trying conditions.

  • A workhorse brake rotor for XC, trail, and all-mountain use
  • IceTech steel/aluminum sandwich dissipates heat
  • Aluminum spider further contributes to heat management
Tech SpecsWeight
Tech Specs
Material
steel, aluminum
Attachment Type
6-bolt
Diameter
160 mm 180 mm, 203 mm
Recommended Use
mountain bike
Manufacturer Warranty
2 years
Weight

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

Grams

Oz

One Color, 160mm
128g
4.52oz
One Color, 180mm
145g
5.11oz
One Color, 203mm
180g
6.35oz

Reviews & Community

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Avg. ride time: 12m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Brake Time

  • Familiarity: I've used it several times

Grate rotors!

Awesome Rotors - Great Deal

  • Familiarity: I've put it through the wringer

Great rotors for the price. Fairly light weight, shed heat well and I think look pretty good too.

Perfect.

  • Familiarity: I've put it through the wringer

Shimano is killing the stop game. Can't be beat!

Sweet Rotors!

  • Familiarity: I've used it once or twice and have initial impressions

I bought these as an upgrade to my Shimano Deore M615 brakes. They run cool and quite with the IceTech finned pads. They look great too! Highly recommend.

Sweet Rotors!

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.

        Avg. ride time: 22m per week
        • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

        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.

        Avg. ride time: 34m per week
        • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

        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.