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Item # SHI001B

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Item # SHI001B

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 Specs

Material:
steel, aluminum
Attachment Type:
6-bolt
Diameter:
160 mm 180 mm, 203 mm
Recommended Use:
mountain bike
Manufacturer Warranty:
2 years

Reviews & Community

REVIEWS

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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!

Avg. ride time: 4h 4m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

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 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.

      Avg. ride time: 2h 43m per week
      • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

      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!

      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.

      Great Rotors

      • Familiarity: I've put it through the wringer

      I've got these rotors on my mountain bike to accompany my Shimano XT brake systems. The stopping power is awesome and they have held their shape after a few good crashes. They're durable and hard to beat!

      Major Upgrade in Stopping Power

        I use these rotors in all things mountain biking, and this time around, I decided to install them on my cross bike... LIKE WHOA!

        Stopping power is up 10 fold this season, and I am kicking myself for not switching to them sooner.

        This is a cheap and simple upgrade, get them NOW!


        Easy DIY

          Get yourself a digital caliper and check width every time you check your chain wear. Shimano prints on disc the min width at 1.5mm.

          Handheld drill + torque wrench make for quick change. Don't forget the loctite. I usually give the hubs a good cleaning before installing new. Check pad wear too!

          Great rotor!

            I bought these to replace the worn out and bent factory Formula rotors my bike came with stock. I've got these rotors paired with EBC's green formula pads and I noticed a huge difference in stopping power over my old rotors the first lever pull! I assume they stay cool enough, I've never bothered to bail off the bike and touch the rotor or bad to see how warm they really are after a long descent, but I've never had brake fade issues with these rotors.

            Great rotor!

            So Icy

            • Familiarity: I've put it through the wringer

            If you're running Shimano brakes and your hubs have a 6-bolt mount, these rotors are the best that Shimano has to offer. Light, sweet looking, and they seem to stay cool enough. Sure the XTR-level rotors get the fancy radiator fins, but then again, most of us probably aren't willing to buy Centerlock hubs for the negligible cooling benefits.

            Still the standard!

            • Familiarity: I've put it through the wringer

            Great performance, priced right and very durable. I tend to be hard on brakes and the XT rotors seem to be able to take more punishment than most. Jonathan gives a great piece of advice in the review below; pay attention to the torque specs! Also, stagger tightening the bolts in a "star" pattern and work up to the torque spec.
            More info here: http://www.shimano.com/media/techdocs/content/cycle/SI/DiskBrakeSystem
            If you need a torque wrench, check out the Park Tool Ratcheting Torque wrench (Accessories /Tools & Maintenance /Tools Tools for the Shop/ Wrenches). Definitely a worth-while investment!
            If you have any questions or for additional information, please feel free to reach out to me directly.

            Ed Kilbourn
            Gearhead - Bike
            Office: 801–736-6396 x4670
            ekilbourn@backcountry.com