Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.

XT RT-MT800 Centerlock Disc Rotor

5 out of 5 stars
3 Reviews
Current price: $34.71 - $64.59 Original price: $67.99
Up to 38% off



Why We Like The XT RT-MT800 Centerlock Disc Rotor

Bike progression has been forging ahead full-speed for some time now, and with all of the progress we see in bike geometry, riders are tackling the trail faster than ever. While this certainly is exhilarating when you've got the trail to yourself and you're booking it into banked berms, it also means you've got to dial in the ability to stop on a dime, should you come up on a climber working their way up the trail. Shimano's XT RT-MT800 Centerlock Disc Rotors are built to do just that, with Ice Technology and a deeper disc area to manage heat than an all-steel rotor can on its own. This tech combines an aluminum core sandwiched between steel extensions to provide better heat dissipation. This rotor is then paired up to an aluminum carrier, which further cools things down. This year's version ads in a tapered fin to help boost heat dissipation, and reduce fade, enabling better modulation and stopping power under pressure. The rotors are compatible with centerlock hubs only, and are available in a huge range of sizes to accommodate your gravel rig to enduro machine, and everything in between.


  • Drop heat and stop on a dime with Shimano's XT rotors
  • Ice-Tech sandwiches aluminum with steel to drop heat
  • Aluminum carrier spider further reduces heat
  • Fins draw heat inwards and away from braking surface
  • Compatible with centerlock hubs only
  • Item #SHIU18K
[rotor] steel, [carrier] aluminum
Attachment Type
centerlock wheels
140mm, 160mm, 180mm, 203mm
Claimed Weight
[140mm] 3.1oz (89g), [160mm] 3.8oz (108g), [180mm] 4.6oz (131g), [203mm] 5.2oz (147g)
mountain biking
Manufacturer Warranty
2 years

Overall Rating

5 based on 2 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 2 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large


Selecting an option will reload the available reviews on the page
5 out of 5 stars

January 2, 2022

Great Brakes

I've put it through the wringer

I have these on my gravel bike right now and they provide great stopping power and hold up great.

Brian B

Originally reviewed on Backcountry.com

5 out of 5 stars

August 19, 2020

Works great just like XT

I've put it through the wringer

Looks great on any bike. Seems to cool itself down well. Got the 160mm one which has 4 spider arms (not 5). If you are confused like myself: XT got silver rotor, silver fins, black spider. XTR got silver rotor, black fins, black spider.

Kailun W

Originally reviewed on Backcountry.com