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Shimano XT SM-RT86 Rotor - 6-Bolt

$49.99

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  • One Color, 160mm
    $49.99

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XT SM-RT86 Rotor

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
  • Item #SHI001B

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

Tech Specs

What do you think about this product?

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>Rating: 5

they stop my bike nice

Familiarity:
I've put it through the wringer
Fit:
True to size

I have a 203 up front and 180 in back paired with a set of M9120 brakes and I have no complaints.

>Rating: 1

Don't buy

Familiarity:
I've put it through the wringer
Fit:
Runs large
Size Bought
160mm
Height
5` 10"
Weight
190 lbs

Ice tech rotors are designed for the most recent M8000 series Shimano brakes and don't work with earlier makes and models by design; the inner aluminum spider is too large and hits the brake pads or calipers. Adjusting the calipers to keep these beautiful puppies, only eliminates the braking surface. While they in fact dissipate heat on a long down hill, they are softer, more easily damaged or bent, they take little abuse and do not brake better than 12 dollar stainless steel rotors with good pads. I purchased 3 pairs for the GDMBR and refuse to ride them. Jenson and REI refuse to publish negative reviews to protect a sales magnet. Buy them only to ware as a sign of your gullibility, keep them only as a sign of your vanity.

160mm lol

>Rating: 5

Great rotor

Familiarity:
I've put it through the wringer

Good, hard-working rotor. Dissipates heat pretty well which will help slow the fade on the long descents. I have had mine a couple of seasons and don't see any signs that I will need to replace them any time soon. Will pair well with XT BR-M8120 and XT BR-M8100

>Rating: 5

Work great

These rotors cool fast so you don't lose braking power on long downhills. I have them on all my bikes. They last a long time and work well with the ice pad. They stay quiet too.

These
>Rating: 3

for the 203 needs better shipping

I got the 180mm and it was perfect. The 203 needs to be taken to a mechanic to have it fixed.

>Rating: 5

Cool rotors

Familiarity:
I've used it several times

I got the Ice tech rotors to replace my stock SRAM rotors that were always over heating, I'm impressed with their ability to stay cool on long descents, so far no issues at all, I love them!

>Rating: 1

arrived bent

Box was in great shape, no sign of damage, but the rotor was bent enough that it wasnt useable until I spent 2 hours bending it back into shape, which I couldve just done with the original.....

same here, the 180 was fine but the 203 needs work

>Rating: 5

Love 'em

Love shimano rotors.

>Rating: 4

Brake Time

Familiarity:
I've used it several times

Grate rotors!

>Rating: 5

Awesome rotors, great value

You will have all the confidence you need going downhill.

>Rating: 5

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.

>Rating: 5

Perfect.

Familiarity:
I've put it through the wringer

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

>Rating: 5

icey baby

ice tech rotors keep my setup dialed. have been great paired with my zee brakes. running 204 front 180 rear

ice
>Rating: 5

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.

I
>Rating: 5

ice ice baby!!!!

Familiarity:
I've put it through the wringer

stopping power and then some!!!!!

>Rating: 5

nothing but ice!!

Familiarity:
I've put it through the wringer

203mm on everything, wanna stop?

>Rating: 5

Quiet and easy

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

>Rating: 5

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.

>Rating: 5

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!

>Rating: 5

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!

>Rating:

Will the XT SM-RT86 rotors work with XTR BR-M9000 brake calipers? What are the best 6 bolt rotors to use with the XTR BR-M9000 brake calipers? What size rotors should I use for XC riding? I'm leaning towards 160mm. I'm not sure if this info will be helpful in answering my questions, but my bike is a Pinarello Dogma XC with Mavic Crossmax Pro Carbon rims, and my weight is around 200lbs while dressed for riding. Thank you for helping me with these questions.

Yes they will work GREAT, shimano recommends this rotor for the 6 bolt down hill bikes. Most people for XC will have 180mmin front and 160mm in rear, but the bigger 203mm in front will keep it cooler if that becomes an issue, just need a mount adapter to fit to your forks. Any 6 bolt disc rotor will work, but these are a great choice. Hope this anyone who has this question.

>Rating:

Will shimano xtm8000 work with SRAM centerline 160 rotors

>Rating:

Like most of the reviewers, I've seen the light and switched across to Shimano and Ice Tec (on my dually). My question is, as I'm running Avid XX brakes on my hard tail, does anyone know if the Shimano XT rotor will (or can be made to) fit Avid XX calipers? Appreciate any assistance (preferably beyond the "just ditch your Avids" response!) 😀

Not sure about the specific body shape on the XX, but I had to file down a small bit of one of the pad retaining bumps on my Avid Elixir R to clear the spider of the 160mm XT rotor. It's a very minor modification (see attached). These rotors with Koolstop porcupads (front) or Jagwire Pro (rear) have at least as good if not better power/feel as the full-XT setup I tried. Seem long-wearing and have been squeal-free, too... Honestly, I've had no issues at all with my Elixirs in 5 years of riding. Tried a few Avid rotors, Ashima (light, scary light), and these XTs... While they add some weight they seem to shrug off the hairy fast 30%-grade-with-90º-bends-at-oak-trees descents over and over again.

>Rating:

building a santa cruz bronson now, going with the XT breaks and wondering what size rotors i should get? little feed back. I also do mostly trail riding / all mouton. will this break set up be a good choice?

Hi Aet, I'd go 180 front and 160 rear. Contact me directly and I can help you with your custom build. Ben brabinowitz@backcountry.com 801-746-7564

>Rating:

Has anyone ever used these on avid bb7 mechanical road breaks? If so how are they?

They will "work" while they might not give you all the benefits to say the hydrolic systems, they will be fine. With the road bike though you might be limited to 140mm rotor, check with your manufacturer.

I just installed a pair of these 203 mm rotors on my tandem equipped with Avid BB mechanical calipers and immediately saw that the inside brake pad tabs were getting in the way. No problem: I just shortened these tabs just enough to leave a clearance of about 2 mm. Improved heat dissipation is important with tandems because of the enormous weight factor (from 300 to 500 pounds!)

>Rating:

Do these come with a bolt kit, or do I need to buy one to mount them onto the hubs?

This rotor includes bolts and washers.