Shimano Deore BL-M4100 Disc Brake Lever - Thunder Mountain Bikes
Shimano Deore BL-M4100 Disc Brake Lever - Thunder Mountain Bikes

Deore BL-M4100 Disc Brake Lever


Regular price $26.99 Sale price$22.99
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

Shimano Deore BL-MT4100 Disc Brake Lever

With quicker brake engagement and shorter free stroke, the Shimano BL-M4100 disc brake lever delivers intuitive braking so you can stay focused on the trail ahead. The BL-M4100 disc brake lever is compatible with both the BR-MT410 and BR-MT420 brake calipers and will make for a nice upgrade to your existing brake set.


  • Model No: BL-M4100
  • Series: Deore M4100
  • Mount: Clamp band
  • I-SPEC EV compatible


  • Brake Caliper: BR-MT410 2-piston, BR-MT420 4-piston
  • Brake hose: SM-BH59-JK-SS (for BR-MT410), SM-BH90-SS (for BR-MT420)
  • Oil: Shimano Hydraulic Mineral Oil


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 3 reviews
Dante Victorino III

Good replacement for my broken brake lever and it’s good $$

Rubine Samuel

Great replacement lever, plenty power and reliability which you can expect from Shimano


pretty good looking and works amazing