Shimano Deore BR-M6100 Disc Brake Caliper - Thunder Mountain Bikes

Deore BR-M6100 Disc Brake Caliper


Regular price$38.99
Brake Pads
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+


The Shimano Deore M6100 caliper features lightweight braking performance and reliable stopping power in all conditions.

  • Model No: BR-M6100
  • Series: Deore M6100
  • Pistons: 2
  • Mount: Post mount
  • Included brake pad: G04S metal
  • Fits front or rear brake


  • Brake lever: BL-M6100
  • Brake hose: SM-BH90-SS
  • Oil: Shimano Hydraulic Mineral Oil
  • Brake Pads: G03A resin, G03S resin, G04S metal, G04Ti metal, J03A resin, J04C 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 6 reviews

Awesome brakes for the price, can’t beat it.

Charles Sourisseaux
Superior Equipment

Superior Equipment sold by a Superior Company. The way it performs, the way it was received (CONDITION, price, etc), THIS IS THE EQUIPMENT, THIS IS THE COMPANY YOU NEED TO BUY FROM. Other companies will try to sell you damaged merchandise, used merchandise as NEW, NEVER USED EQUIPMENT. Thunder Mountain Bikes is the real deal!!!!!!

Amazing price and power.

Needed a replacement and this fit the bill. This will work with most Shimano triggers. I used these on my XT levers.

Barry Erlandson
Great product for a good price

These brakes have become my go-to 2 pot brakes, especially when put on a cross-country / down-country style bike. Shimano have always been easy for me to bleed and set, and I have no complaints. Thunder Mountain Bikes has also been pretty awesome as they have shipped things out unexpectedly fast. They have quickly become one of my go-to shops online for bike components.

Daniel Boehning
Great replacements from RS785

One of my RS785 on my road bike started leaking from a cracked piston. Attempted to use third-party replacement pistons, couldn't keep hold and leaked. The 6100s hold the same pads (G03S). These 6100s are mounted up to Tiagra 4700 hydraulic brifters. Keeps my road bike happy. Thanks Thunder Mountain Bikes for a solid price and quick delivery.