Shimano BL-M4100/BR-MT420 Disc Brake Set - 4 Piston
Shimano's BR-MT420 brake set includes the BL-M4100 brake lever and BR-MT420 4-piston caliper. New for 2021, the M4100 brake lever features quicker brake engagement and a shorter free stroke. The Shimano BL-M4100 brake lever delivers intuitive braking so you can stay focused on the trail ahead. The Shimano BR-MT420 caliper features consistent braking performance and reliable stopping power in all conditions. The 4-piston caliper instills greater downhill confidence and control.
Shimano Deore BL-M4100 Disc Brake Lever
- Model No: BL-M4100
- Series: Deore M4100
- Mount: Clamp band
- I-SPEC EV compatible
Shimano BR-MT420 Disc Brake Caliper
- Model No: BR-MT420
- Series: Deore M4100
- Pistons: 4
- Mount: Post mount
- Included brake pad: D02S Metal, D03S resin
- Brake hose: SM-BH90-SS
- Oil: Shimano Hydraulic Mineral Oil
- Brake Pads: 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.
To request a return, please visit: returns.thundermountainbikes.com 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.
If you have any questions concerning our return policy, please contact us at: