DYISLAND ATM4 Four-Piston Electric Bicycle Brake Kit - 【 2026 NEW 】

Sold out

$179.00 USD $155.00 USD

Sale 13%

In stock Low stock Out of stock : 15 left

bac_1234 Self-AdjustingOpenHydraulicSystemAutomaticallyrestorestheidealbitepointasbrakepadswear—nomanualadjustmentrequired. LeftLeverControlsFrontBrake/RightLeverControlsRearBrakeDesignedtomatchtheridinghabitsofmostcyclistsforintuitiveandsaferbrakingcontrol. Ergonomic3-FingerLeverwithTool-FreeReachAdjustment125mmleverfitsmosthandsizes.Easilyadjustleverreachwithouttoolsforimprovedcomfortandcontrol.Bitepointcanalsobefine-tunedforeitheraggressiveorsmootherbrakingfeel. ThickSinteredMetalBrakePads(5.5mm)PadSize:38.2×37×5.5mmComparedwithstandardpads(26×15×1.9mm),thelargercontactareadeliversstrongerbrakingforce,betterheatresistance,reducedfade,andlongerservicelife—idealfordownhillandoff-roadriding. Powerful4-PistonCalipers(74mmLength)Providesstrongandbalancedbrakingperformancewithexcellentheatdissipationforhigh-speedridingandlongdescents. Durable&E-BikeCompatibleCNC-forgedaluminumconstructionwithsplitdesignforeasyinternalcablerouting.Includesdetachable2-pinwaterproofmagneticmotorcut-offsensorforsafere-bikebraking. HoseLength FrontBrakeHose:1000mm(39.4") RearBrakeHose:1850mm(72.8") Suitableformostbicycles,e-bikes,MTB,downhill,andcustombuilds. PackageIncludes Front&RearHydraulicBrakeSet Two180mm×2.3mmBrakeRotors BrakeMountingBrackets Screws&InstallationHardware *Pleasecheckbrakemounttypeandconnectorcompatibilitybeforeinstallation.

Description

Self-Adjusting Open Hydraulic System
Automatically restores the ideal bite point as brake pads wear — no manual adjustment required.

Left Lever Controls Front Brake / Right Lever Controls Rear Brake
Designed to match the riding habits of most cyclists for intuitive and safer braking control.

Ergonomic 3-Finger Lever with Tool-Free Reach Adjustment
125mm lever fits most hand sizes. Easily adjust lever reach without tools for improved comfort and control.
Bite point can also be fine-tuned for either aggressive or smoother braking feel.

Thick Sintered Metal Brake Pads (5.5mm)
Pad Size: 38.2 × 37 × 5.5mm
Compared with standard pads (26 × 15 × 1.9mm), the larger contact area delivers stronger braking force, better heat resistance, reduced fade, and longer service life — ideal for downhill and off-road riding.

Powerful 4-Piston Calipers (74mm Length)
Provides strong and balanced braking performance with excellent heat dissipation for high-speed riding and long descents.

Durable & E-Bike Compatible
CNC-forged aluminum construction with split design for easy internal cable routing.
Includes detachable 2-pin waterproof magnetic motor cut-off sensor for safer e-bike braking.

Hose Length

Front Brake Hose: 1000mm (39.4")

Rear Brake Hose: 1850mm (72.8")

Suitable for most bicycles, e-bikes, MTB, downhill, and custom builds.

Package Includes

Front & Rear Hydraulic Brake Set

Two 180mm × 2.3mm Brake Rotors

Brake Mounting Brackets

Screws & Installation Hardware

* Please check brake mount type and connector compatibility before installation.

尺寸: F1000mm*R1850mm Brake Kit

F1000mm*R1850mm Brake Kit

1000mm / Left Handlebar - Single Front Brake Kit

1850mm/Right Handlebar - Single Rear Brake Kit

Quantity

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