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Shimano XTR M9100 Hydraulic Disc Brake Set Left/Front
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Shimano XTR M9100 Hydraulic Disc Brake Set

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MSRP: $324.99
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In Mountain bike riding, trail conditions change drastically from one second to the next, from one turn to the next. Mountain bikers need to be able to seamlessly perceive the conditions, judge their options, and operate their bike in a split second. XTR satisfies the needs of the most demanding riders by providing the highest level of precision and integration. Shimano refocused on the original goal of XTR - to be the ultimate race components. The M9100 brakes have been retuned for better modulation with less abrupt action by incorporating more of a linear feel as the lever is brought to maximum power. The lever clamp has been moved inboard by 25mm which allows room to insert a dropper lever or suspension control between the brake clamp and the grip. There is also now a new I-SPEC EV direct-mount interface option as well. The new I-SPEC EV interface is not backwards compatible. The new generation of XTR brakes come in two variations; XC (BR-M9100) and Enduro (BR-M9120).

XC Version Specs:

  • 2-cylinder caliper construction
  • Carbon actuation lever
  • No Servo-Wave device
  • Master cylinder (lever assembly) now made of magnesium
  • Smaller caliper for weight savings
  • New, smaller brake pad which is no longer Ice Tech compatible
  • No longer uses banjo fitting on caliper
  • Claimed 204 grams (lever, hose & caliper)

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.



Brake Type: Disc 


Brake Pad Type: Disc 


Brake Parts: Lever 


Mfg PartNum: IM9100JLFPMA100 


Mfg PartNum: IM9100KRRXMA170 


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Good Stopping power and very lightweight
by James K
Cycling Enthusiast
Nashville, TN

I've had brakes with more stopping power like the basic Deore brakes or the Dominion A4s but they don't get anywhere near these on the weight. I'm over 200 pounds so I have to choose my brakes carefully. My XC bike came with Level TLM brakes and they did not stop me causing some dangerous close calls in the few rides that I had before changing them. Absolutely no issues stopping with these very powerful two pots. I don't ever feel the need to get 4 pot brakes on my trail bike where I am running these. I do run 4 pots on my all mountain/enduro bikes though.

Reviewed 1/16/2024
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Great brakes however bleeding is tricky
by Anonymous

These are great brakes but the bleeding leaves a lot to be desired. The line seemed to be clogged so make sure to remedy this before trying to push fluid through.

Reviewed 9/12/2020
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