1.800.651.4050 Mon-Sat 8am-5pm PT
Shimano Deore XT Disc Brake Assembly Set BL-M8100 Right
Shimano Deore XT Disc Brake Assembly Set BL-M8100 Left
Click to zoom
Shimano Deore XT Disc Brake Assembly Set BL-M8100 Right
Shimano Deore XT Disc Brake Assembly Set BL-M8100 Left

Deore XT Disc Brake Assembly Set BL-M8100

Mfg PartNum:
Earn $11.89 in Rewards credit. Click to learn more.
This type is not eligible for Rewards points
In Stock Now
Please Confirm Type
This item is currently not in stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Qualifies for Free Shipping!

Backorder: This item is currently not in stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Brake With Confidence

With a focus on reduced weight and cross-country tuned stopping power, the SHIMANO DEORE XT BL-M8100 lever and hydraulic brake set provides secure and powerful braking so that you can explore your limits with confidence.

Lever Features

  • Intuitive and versatile braking keeps your focus on the trail
  • Optimized lever axle position with additional contact point and refined ergonomics
  • Greater flexibility and action-optimized cockpit layout
  • High rigidity
  • 10% stiffer than the Shimano M8000 series even under high temp conditions
  • Quicker brake engagement with shorter free stroke
  • Rider tuned adjustment
  • Toolless reach adjust
  • Free stroke adjust

  • Hydraulic Disc Brake Caliper Features

  • ICE TECH (rotor cooling technology for consistent performance)
  • Superior modulation gives you greater control
  • Quicker Piston retraction
  • Lightweight
  • Two piston
  • Quick and easy assembly
  • Banjo type connection and inside hose routing

  • 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 Pad Type: Disc 


    Brake Type: Disc 


    Discipline: Mountain Biking 


    Oil: Shimano Mineral 


    Brake Pad Type (Optional): J03A Resin (w/ fin) J04C Metal (w/ fin) 


    Brake Pad Type (Standard): G03A Resin (w/o fin) G04S Metal (w/o fin) 


    Lever Weight: 392 g


    Caliper Weight: 392 g


    Mfg PartNum: IM8100JLFPNA100 


    Mfg PartNum: IM8100JRRXNA170 

    Articles will open in new tab.

    Comparing bottom bracket types and standards.
    You wanna go fast? Join the ceramic revolution!
    Make your upgrades count. Here's the equipment that will help you ride your bike faster.
    Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
    What to consider when selecting a crankset for your road bike.