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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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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

      Easy to swap out

        Bent my rotor on a rock. A new one showed up quick and was so easy to change out. Pro Tip: pay attention to the torque specs when installing. One wouldn't want brake discs getting loose. Use blue loctite.

        Easy to swap out

        Great addition to my XT brakes

        • Familiarity: I've used it several times

        These rotors are great - they don't fade a bit, zero noise, and heck, they look kinda cool too. A good, cheap upgrade you can easily do yourself!

        Great addition to my XT brakes

        Ice, Ice, Ice tech!

          If you don't know about ice teach, you should. These rotors use different types of metal sandwiched together to dissipate heat way better. No more brake fade on the way down.

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

          Best Rotors

          • Familiarity: I've put it through the wringer

          Shimano IceTech are the best rotors on the market, especially if you are running Shimano brakes. the heat dispersing tech behind them ensure that your brakes run as needed throughout your ride even after long descents.

          Great price for a great rotor.

          • Familiarity: I've put it through the wringer

          Running these on two bikes right now. My hope rotors were much lighter but developed a shift no matter how tight I made the bolts. So I put these on because I remembered their mounting bolts and clips. No problems so far. Just work.

          great rotors

          • Familiarity: I've put it through the wringer

          No the ice tech rotors but a little cheaper, I am not a EWS pro racer or anything so I went with these because I have ran Ice Tech rotors and couldnt tell the difference. These are solid and of course shimano quality.

          Are you sure they aren't Ice Tech? It looks like it says it on the rotor in the product pic.

          Soo Icey!

          • Familiarity: I've put it through the wringer

          Shimano knows brakes, whether is calipers or rotors - they put out a great product. I've run XT for many years and in my opinion you cant beat it for the price. Their SLX is also a tremendous option. Simple, hassle free and perform at a top notch level!

          Silent Stoppers

          • Familiarity: I've put it through the wringer



          Unless you get water on them these things are silent. Ive ridden them in every condition and could not be happier with them.

          Great Rotor

          • Familiarity: I've put it through the wringer

          I've been using XT rotors for the past two seasons with XT Brakes. Bang for the buck it's the best Brake System I've used. They work great and are extremely reliable. Highly recommended.

          Gettin' Stopped

          • Familiarity: I've put it through the wringer

          If you've been riding the same rotors for sometime now, and their stopping power is getting weak, it's prolly time for some new ones.

          The Ice-Tech is where it's at with these guys. If you need to stop hella quick, it's gonna happen with the rt86's. Easy to install, so you can get back out and get rippin'