Shimano Deore BR-M6120 Disc Brake Caliper - Thunder Mountain Bikes

Deore BR-M6120 Disc Brake Caliper


Regular price$68.99
Brake Pads
  • Low stock - 1 item left
  • Inventory on the way
  • Free shipping on all orders $49+

The Shimano Deore BR-M6120 caliper features consistent braking performance and reliable stopping power in all conditions. The 4-piston caliper instills greater downhill confidence and control.


  • Model No: BR-M6120
  • Series: Deore M6100
  • Pistons: 4
  • Mount: Post mount
  • Included brake pads: D02S Metal or D03S Resin
  • Fits front or rear brake


  • Brake lever: BL-M6100
  • Brake hose: SM-BH90-SS
  • Oil: Shimano Hydraulic Mineral Oil
  • Brake pad: D02S metal, D03S Resin


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 7 reviews
James Pooton
Great upgrade + easy swap from 6100

At 6'4" 210 lb the 6100 dual piston is pushed to the edge on extended downhill. So when a piston started to leak on my rear caliper I went for the 6120 4 piston upgrade. Very easy swap (with simple bleed kit of some kind) and *noticeably* better braking. Very happy. Front caliper will be next. :)

John Fraser
Great value

Great value for a four piston caliper, especially when you don't also have to also buy the levers as part of the package.

Michael Campo
Shimano Caliper M6120

Order/delivery was easy and timely, definitely would buy from thunder mountain again!

Logan Ruby
Cheap but reliable replacement!

The BR-M6120 caliper, as most of you know is the cheapest of shimano’s premium line of 4 piston brake calipers. The performance does not worsen with its cost. I’d say it’s comparable to an XT caliper, with the power for that matter. It does however have more weight and can’t fit winged pads like the SLX and up. But non the less my old one broke in a crash. And I’m only out 50 bucks compared to any other model which could result in me being out over a hundred dollars which just isn’t economically sustainable for me, so it’s a great option. And super easy to install if you know how to bleed a brake. Would 100% buy agian:)

Bryan Calvillo
Great Upgrade

Had the 2 piston deore calipers and upgraded to these 4 pistons. Way better stopping power!