Cart
DYISLAND ATM4 Four-Piston Electric Bicycle Brake Kit - 【 2026 NEW 】
Description
-
Self-Adjusting Open Hydraulic System
Automatically restores the ideal bite point as brake pads wear—no manual adjustments needed. -
Ergonomic 3-Finger Lever with Tool-Free Reach
125mm long lever fits most hand sizes. Tool-free dial allows quick reach adjustment for comfort and control.
Bite point can be fine-tuned for aggressive or smooth braking. - Thick Sintered Metal Pads (5.5mm)Dimensions: 38.2 × 37 × 5.5mm (custom) vs. 26 × 15 × 1.9mm (standard) Heat-resistant, fade-free, and durable. Larger contact area boosts stopping power for long descents and off-road riding.
-
Powerful 4-Piston Calipers (Length: 74mm)
Strong, even braking force with excellent heat dissipation. Handles high-speed and long downhill scenarios effortlessly. -
Durable & E-Bike Compatible
CNC-forged aluminum construction. Split design supports internal cable routing.
Includes detachable magnetic cut-off sensor (2-pin waterproof) to safely cut motor power during braking. -
The rear brake comes as a one-piece (integrated) unit by default. If you need the split (separate) version, please leave a note when ordering.
The brake set includes:
-
Two 180 mm × 2.3 mm brake rotors
-
Brake mounting brackets
-
Screws and installation hardware.
*Check connector compatibility before installation. -
180-Day Warranty
DYISLAND brake kits are warranted against manufacturing defects for 180 days from the date of purchase.
If your product qualifies for warranty, we will repair it and cover the cost of parts, labor, and other necessary expenses.
If you need a repair or replacement that is not covered by warranty, please contact us. We will do our best to support you - often we can help diagnose the problem and provide a replacement part for a fee to complete the repair.
Free Shipping
DYISLAND supports delivery to North America, the European Union, and some countries/regions. The standard delivery time is 7–15 working days, and the specific time may vary depending on the logistics arrangement and the customs clearance process at the destination.
Due to logistics or policy restrictions, some areas may not support delivery.
Please confirm whether your delivery address is within the supported range before checkout.
If your delivery area is not listed, please contact us to confirm whether delivery is possible
30-Day Return
DYISLAND supports 30 days of worry-free returns. If you are not satisfied with the product you purchased, you can apply for a return within 30 days of purchase. Please make sure the packaging is intact to avoid damage during transportation. The return shipping cost is borne by the buyer.
If the return is due to a defective part, we are happy to provide a replacement part to solve the problem and ensure that you can resume use as soon as possible.
After confirming that the returned product meets the return conditions, we will process a refund after product inspection. The refund will be issued through the original payment method.
Please note that products with man-made damaged or missing parts will not be refunded.
If you have any questions or need help, please feel free to contact our customer service team
