Shimano XTR BR-M9100 Disc Brake Set - 2 Piston - Thunder Mountain Bikes
Shimano XTR BR-M9100 Disc Brake Set - 2 Piston - Thunder Mountain Bikes

XTR BR-M9100 Disc Brake Set - 2 Piston


Regular price$324.99
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

Shimano XTR BR-M9100 Disc Brake Set - 2 Piston

Shimano's XTR BR-M9100 disc brake set includes the BL-M9100 brake lever and BR-M9100 2-piston caliper. The XTR M9100 caliper features a Mono-body design machined from a single cold-forged block to maximize rigidity and a pair of ceramic pistons for perfect, Rider Tuned stopping power. With a focus on reduced weight and advanced stopping power, the Shimano XTR BL-M9100 lever provides intuitive modulation so that you can explore your limits with confidence.


Shimano BL-M9100 Disc Brake Lever

  • Model No: BL-M9100
  • Series: XTR M9100
  • Mount: Clamp band
  • I-SPEC EV compatible

Shimano BR-M9100 Disc Brake Caliper

  • Model No: BR-M9100
  • Series: XTR M9100
  • Pistons: 2
  • Mount: Post mount
  • Brake pads included

Shimano SM-BH90-SS Brake Hose

  • Model No: SM-BH90-SS
  • Brake hose included
  • J-Kit


  • Lever blade: BL-M9100 lever member unit
  • Brake hose: SM-BH90-SS
  • Oil: Shimano Hydraulic Mineral Oil
  • Brake Pads: K03S resin, K03Ti resin, K04s metal, K04Ti metal

Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right part the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!


We currently offer both economy and expedited shipping options though FedEX and USPS. 

Orders totaling over $49 are eligible to ship for free via an economy ground option of our choice. 

If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location. 


Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.

Returns or exchange requests for New or Used Bikes must be requested by emailing us at within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.

Returns for most other items may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind. 

Clearance and open-box items may not be returned. 


To request a return, please log in to your customer account by clicking the  customer account icon  Profile icon in the top right of any page or visit

1. In the Email field, enter your email address and click Continue.

2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.

3. Go back to the online store and enter a six-digit verification code to log in.

4. Find and click on the order that you want to submit a return for.

5. If your order has more than one item, select only the items you want to return.

6. Select a return reason and add a note for the store if needed.

7. Click Request Return.

Once your return request is approved, you will receive an email with shipping instructions and a return shipping label. 


We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.


If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.


If you have any questions concerning our return policy, please contact us at:

(928) 282-1106   |

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Customer Reviews

Based on 2 reviews
Nicholas Perez
Shimano XTR Brakes

Great service! Great product!!

Howard S
Fantastic Brakes

I have always been a big fan of Shimano brakes and these are no exception. I used these on a lightweight downcountry build that I recently finished. The power from these brakes is amazing considering their size and ultra light weight. As a guy that does all my own work on the bikes, I really appreciate how easy bleeding and maintainance is on these brakes as well. If you are looking for a sturdy, powerful, light-weight brake - this is your set!