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.
Details:
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
Compatibility:
- 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!
Shipping
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.
RETURNS
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 sedona@thundermountainbikes.com 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.
RETURN PROCESS
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
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.
REFUNDS
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.
EXCEPTIONS
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.
OTHER QUESTIONS?
If you have any questions concerning our return policy, please contact us at:
