Shimano D03S Disc Brake Pads - Resin/Steel - Thunder Mountain Bikes

D03S Disc Brake Pads - Resin/Steel

SKU: Y1XM98010

Regular price $27.00 Sale price$18.99
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

Superior stopping power for Shimano 4-piston brake calipers!


  • Compound: Resin
  • Backing plate material: Steel
  • Includes one pair of D03S brake pads and spring


Shimano D03S disc brake pads fit the following Shimano brake calipers:

  • XTR BR-M9120
  • Deore XT BR-M8120
  • Deore XT BR-M8020
  • SLX BR-M7120
  • Deore BR-M6120
  • Saint BR-M820
  • Zee BR-M640
  • BR-MT520
  • BR-MT420



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 5 reviews
Johnny Smith
Super fast shipping

Great product … best price… and shipping was even faster than scheduled !!

Jason Yamachika
Fine tuning your brakes

Purchased the Shimano DO3S resin pads for a more softer yet still be able to stop feeling for my SLX 4 piston disc brakes. I’ve had the metallic pads and there fine, I just wanted a softer touch when using the levers. Only compromise is that resin pads wear down quicker.

Lance Dettle
Good prices fast shipping

Good prices fast shipping

Robert White
No squeak, yes stop

popped a set onto my Trek Fuel 8. Easy to put on. They stop fast and make me go slow. What more can I ask for?
BTW, great service getting them to me pronto. Thanks

Ryan Cole
Shimano brake pads

Excellent replacement pad for shimano BRM 8120. Needed to pads pretty quickly and Thunder Mountain delivered!