Shimano SLX BR-M7120 Disc Brake Set - 4 Piston - Thunder Mountain Bikes
Shimano SLX BR-M7120 Disc Brake Set - 4 Piston - Thunder Mountain Bikes

SLX BR-M7120 Disc Brake Set - 4 Piston


Regular price$186.99
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

Shimano SLX BR-M7120 Disc Brake Set - 4 Piston

Shimano's SLX BR-M7120 disc brake set includes the BL-M7100 brake lever and BR-M7120 4-piston caliper. With a focus on reduced weight and advanced stopping power, the SLX BL-M7100 lever provides intuitive modulation so that you can explore your limits with confidence. The SLX BR-M7120 caliper features consistent braking performance and reliable stopping power in all conditions. The 4-piston caliper instills greater downhill confidence and control.


Shimano BL-M7100 Disc Brake Lever

  • Model No: BL-M7100
  • Series: SLX M7100
  • Mount: Clamp band
  • I-SPEC EV compatible

Shimano BR-M7120 Disc Brake Caliper

  • Model No: BR-M7120
  • Series: SLX M7100
  • Pistons: 4
  • Mount: Post mount
  • Brake pads included


  • Lever blade: BL-M7100 lever member unit
  • Brake hose: SM-BH90-SBM
  • Oil: Shimano Hydraulic Mineral Oil
  • Brake Pads: D02S metal, D03s resin, N03A resin, N04C 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.

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   |

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Customer Reviews

Based on 4 reviews

Hose is too short

Greg Parramore
good braking for good price

4 piston fun that won't break you when you have to replace. if your not a weight weenie this will stop you quick and the modulation for shimano is there without crushing your brake lever to the handlebars.

Faster more confident/controlled braking

Best upgrade I’ve done to my bike, shipping was lighting fast as well!

Jacob Azamar
Excellent Bang for the Buck

Hard to beat for the price. I paired this brake set with the Shimano XT SM-RT86 Ice Tech Rotors for my bike park rig. After a season of shuttling trails and long days at the bike parks, these brakes still work great. These brakes give me the confidence to ride faster because I know they will stop when i need them to stop.

It's only towards the very end of day at the bike park on a hot summer day, after hours of laps and descents, that there is a slight bit of brake fade. It hasn't been anything to worry too much about because the day is pretty much over, and the brakes will be just fine the next day when I would come back to the bike park.

Great durability, lots of power, and just an overall great set of brakes.