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

Deore BR-M6120 Disc Brake Caliper


Regular price$68.99
Brake Pads
  • In stock, ready to ship
  • 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 depending on your location. 


Effective Nov 19, 2021, for all online orders placed on or after Nov 19, 2021.

Note: For all orders placed before November 19th.  Please see the old Policy here.

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.  If you are unsure if your item qualifies for a return.  Please email us first:

Return shipping charges will be paid for by the customer. 

As a convenience, we can send you a pre-paid return label. The return shipping charge will be deducted from your refund when using our pre-paid label. Return shipping rates are as follows:  

  • Bicycles: Customer pays the quoted amount. Please contact us.
  • Oversized (Kuat racks etc.): $40 per box
  • Wheels: $20 per box
  • Medium packages: $10 per box/envelope
  • Small packages (Grips, brake pads, etc.): $5 box/envelope

*Paid shipping charges will not be refunded.

Return Process

To return an item, please follow these steps:

  1. Email us at Please note the order number, the items that needed to be returned, and why.
  2. Once approved, we will notify you of the return label charge and email a pre-paid shipping label.
  3. Place the item in its original packaging, including all tags
  4. Pack the item securely to prevent any damage on its return trip.
  5. Drop the item off at your local post office.


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. Paid shipping charges will not be refunded. 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.


We do not accept Exchanges. Instead, return the item as outlined above and place a new order for the item you would like to purchase. This will get the item into your hands weeks faster than an exchange would.


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 5 reviews
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!

K Ciccarella
Fast and easy

Great selection, great price, and on time delivery.

Anthony Knight
Shimano Deore M6120 Caliper

Folks at Thunder Mountain are amazing as always! They always have a good inventory and ship super fast! Got it installed, bled, and got first ride on it. Great caliper and great price.