

🚵♂️ Brake Cooler, Ride Harder: The Rotor That Won't Quit
The Shimano XT SM-RT86 Rotor is a premium 6-bolt mountain bike brake rotor featuring a 3-layer construction with an aluminum core and stainless steel outer layers. This innovative design reduces heat buildup by approximately 100°C compared to traditional all-steel rotors, ensuring consistent braking performance and durability. Available in 160mm, 180mm, and 203mm diameters, it offers a secure fit and is backed by Shimano’s 2-year warranty and strong user satisfaction.
| ASIN | B008ZTLJJ4 |
| Best Sellers Rank | #43,204 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #10 in Bike Brake Rotors |
| Brand | SHIMANO |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,475) |
| Date First Available | August 20, 2012 |
| Exterior Finish | Stainless Steel |
| Global Trade Identification Number | 00689228744684 |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 203 Millimeters |
| Item Weight | 7 ounces |
| Item model number | FBA_ISMRT86L2 |
| Manufacturer | Shimano |
| Manufacturer Part Number | FBA_ISMRT86L2 |
| Material | Aluminum, Stainless Steel |
| Model | FBA_ISMRT86L2 |
| UPC | 689228744684 |
| Vehicle Service Type | Bicycle |
H**O
Quality brand product
Amazing rotors for my E bike. Just feels awesome when the levers are pressed. Stays firm and no warping whatsoever. I have this installed 2 months ago and am 100% satisfied
J**F
Perfect fit
Purchased a pair of these to put on a second wheelset for my Cannondale Quick CX 1. They're a different model than the discs on the original wheelset but they worked perfectly. Definitely worth having them so I don't have to swap the discs every time I swap the wheels.
A**Y
Big improvement….
My Orbea came stock with Shimano 180mm rotors. They were adequate for stopping power on flat terrain. When going down steep rough trails I didn’t feel I had adequate breaking control. Jumping up to the 203mm rotors made a world of difference along with Shimano Ice Tech technology which helps keep overheating down. Don’t feel like the down hills are potential suicide missions any longer. Would highly recommend.
J**E
Great stuff from shimano
Great stopping power. Very easy install. Fit is something you need to think of now. If your bike came with 180mm rotors you need a +23 mm post mount adapter. If your ride came with 160mm you need 43 mm post mount adapter. Also some frames can’t accommodate this rotor size so check your frame specs for max rear rotor size info. I Hope this helps someone and I’m not just mansplaining basic stuff to bike tech nerds.
C**S
Corresponde a lo ofertado
L**U
Fits perfectly.
I have a heavy E-bike (Tesway X7-Pro), and I also tow a cargo trailer with it. So I decided it would be a good idea to upgrade the stock 180mm rotors with 203mm rotors. I got this rotor, the XT SM-RT86 for the back rotor of my bike, and it fits perfectly and looks GREAT. I went with the XTR version of this for the front rotor. (Honestly, you can hardly tell the difference). Of course, I had to replace the front and rear caliper brackets with 203-mm capable units, which added a bit of cost, but not much (around $20 for both). In all, I'm super happy with this rotor slowing down the back half of my bike. It's definite improvement over the 180's, even on 2-piston calipers. And combined with the XTR on the front wheel, the braking performance has GREATLY improved. 5 stars.
N**N
Great and light
These are fantastic. They are actually a combined 142g lighter then the cheaper Shimano rotors my bike came with. The stopping power is excellent.
G**.
No problems at all
These 203mm rotors paired with Hardheaded Ram ceramic pads just work flawlessly. The only thing that would be better is if they dressed them up with some color choices but they work so good it wouldn’t matter color they are
F**.
Lo previsto. Muy bueno
Y**R
Rotors and everything are great and are what is described, however the seller has decided to ship the rotors in only the little plastic bag within the actual rotor box, rather than leave them inside the Shimano box it originally came in. I presume it is to save shipping costs, however, it puts them at risk of warping to try not to put too much pressure on them while opening.
J**E
Super bon disc shimano
R**Z
All likes, no dislike...👍Original, very fast delivery.
L**I
Fa perfettamente il suo dovere, montato sull'anteriore con un sistema frenante xt-m8000 va alla grandissima. Anche se si maltrattano i freni su discese lunghe, dove il freno viene usato in modo prepotente, abbinato con pasticche in resina, non si surriscalda e la frenata resta sempre decisa. Consigliato N.B. gli adattatori da montare sulla pinza non sono inclusi nella confezione e vanno acquistati a parte
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