Shimano XTR BR-M9100 Disc Brake Caliper - Thunder Mountain Bikes

XTR BR-M9100 Disc Brake Caliper


Regular price$164.99
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

Shimano XTR BR-M9100 Disc Brake 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.


  • Model No: BR-M9100
  • Series: XTR M9100
  • Pistons: 2
  • Mount: Post mount
  • Included brake pads: K04Ti
  • Fits front or rear brake


  • Brake lever: BL-M9100
  • Brake hose: SM-BH90-SS
  • Oil: Shimano Hydraulic Mineral Oil
  • Brake pad: 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.

All returns must be requested within sixty (60) days of the fulfillment date (i.e. the date we printed the shipping label and boxed up your order.) All returned items must be received in new and unused condition, with the original tags and labels attached, and in the original packaging.  We cannot accept returns on any items that have been installed or show wear of any kind. 

Return Process

To request a return, please visit: and follow the steps to return eligible items from your order. 


After receiving your return and inspecting the condition of your item, we will process your return. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. We will notify you by email when your return has been processed.

For all Special Order items, there is a 25% restocking fee. Special Order items are those that we do not currently stock.


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

Other questions?

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

(928) 282-1106   |

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Customer Reviews

Based on 1 review
Chris Parm
XTR Br-M9100 brake caliper

Once again, Thunder Mountain Bikes had the right part for the best price. TMB is now my first, go-to online bike shop.