---
product_id: 471369695
title: "M4 Hydraulic Disc Brake, Aluminum Alloy 4 Piston Caliper MT420 Left Rear 1400mm Right Front 800mm Brake, Disc Brake Sets for Mountain Bike, Fat Bike, Bicycle"
brand: "bter"
price: "A$150"
currency: AUD
in_stock: true
category: "Bter"
url: https://www.desertcart.com.au/products/471369695-m4-hydraulic-disc-brake-aluminum-alloy-4-piston-caliper-mt420
store_origin: AU
region: Australia
---

# 4-piston caliper for max stopping power Adjustable oil pump stroke for custom feel Dual-length hoses (800mm front, 1400mm rear) for perfect fit M4 Hydraulic Disc Brake, Aluminum Alloy 4 Piston Caliper MT420 Left Rear 1400mm Right Front 800mm Brake, Disc Brake Sets for Mountain Bike, Fat Bike, Bicycle

**Brand:** bter
**Price:** A$150
**Availability:** ✅ In Stock

## Summary

> 🚵‍♀️ Stop on a dime, ride with confidence — brake like a pro!

## Quick Answers

- **What is this?** M4 Hydraulic Disc Brake, Aluminum Alloy 4 Piston Caliper MT420 Left Rear 1400mm Right Front 800mm Brake, Disc Brake Sets for Mountain Bike, Fat Bike, Bicycle by bter
- **How much does it cost?** A$150 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/471369695-m4-hydraulic-disc-brake-aluminum-alloy-4-piston-caliper-mt420)

## Best For

- bter enthusiasts

## Why This Product

- Trusted bter brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic Design:** Single and double finger levers with anti-slip texture ensure confident, fatigue-free handling.
- • **Customizable Control:** Adjustable oil pump stroke lets you fine-tune brake feel for ultimate responsiveness.
- • **All-Weather Reliability:** Hydraulic system maintains consistent performance in wet, muddy, or rugged conditions.
- • **Precision Stopping Power:** 4-piston caliper delivers immediate, reliable braking even on the steepest trails.
- • **Perfect Fit for Your Ride:** Front and rear hoses sized for seamless installation on most mountain and fat bikes.

## Overview

The BTER M4 Hydraulic Disc Brake set features a durable aluminum 4-piston caliper design with adjustable oil pump stroke, delivering powerful and precise braking for mountain and fat bikes. With ergonomically designed levers and dual-length hoses tailored for front and rear installation, this brake set ensures reliable, customizable stopping power in all terrains and weather conditions.

## Description

How to Use: Please remove the caliper protection sheet before installation, do not squeeze the brake lever without protection, otherwise the tubing may burst. Specification: Item Type: Hydraulic Disc Brake Calipers Material: Aluminum Alloy Color: Black Weight: Approx.687g/24.2oz Style: 1 x Pair of Four Oil Brakes (Rear Left, Front Right) Tubing: Front Tubing Length: Approx. 800mm/31.5in, Rear Tubing Length: Approx. 1400mm/55.1in Product Application: Approx. 160mm/6.3in Disc Package List: 1 x Pair of Hydraulic Disc Brake Calipers4 x Screw

## Features

- ★【EASY BRAKING】★ Mountain bike hydraulic oil brake, dual-piston brake, no matter how fast the speed, how steep the terrain, how wet the environment, gently pull the brake lever to stop immediately.
- ★【SINGLE, DOUBLE BRAKE LEVER】★ Single, double finger brake lever is designed according to the human body, flexible control, antislip surface particles, antislip do not release. The brake is easy to operate, the front and rear, left and right are in line with the usage habits.
- ★【UPDATED SAFETY】★ Double braking with four pistons can directly transfer the oil pressure to the brake block stable and make the brake transmission more efficient. Even if you are in bad terrain and weather, the brake set will still guarantee efficient braking.
- ★【ADJUSTABLE OIL PUMP STROKE】★ This m4 hydraulic disc brake Integrated cylinder design, strong sealing, reduce maintenance times, lightweight design. Brake handle oil pump stroke can be adjusted to control pump oil amount and stroke.
- ★【BRAKE SIZE】★ MT420 for hydraulic brake, the right front brake hose length is 800mm, and the left rear brake hose length is 1400mm. Compatible with 160mm rotor by default, 22.2mm/0.87in is basically suitable for the installation of models on the market.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09J54479J |
| Additional Features | 4-piston brake calliper, adjustable oil pump stroke |
| Best Sellers Rank | #53,175 in Sporting Goods ( See Top 100 in Sporting Goods ) #203 in Bike Brakes & Parts |
| Brand | BTER |
| Brand Name | BTER |
| Center To Center Spacing | 160 Millimeters |
| Color | Black |
| Colour | Black |
| Country of Publication | China |
| Exterior Finish | Black on Aluminium |
| Exterior finish | Black on Aluminium |
| Finish Types | Aluminium |
| Global Trade Identification Number | 07354166318411 |
| Hand Orientation | Ambidextrous |
| Handle Attachment Mechanism | Screws |
| Handle Material | Aluminum |
| Handle Type | Lever |
| Handle type | Lever |
| Included Components | 1 x pair of hydraulic disc brake calipers, 4 x screws |
| Manufacturer | BTER |
| Material | Aluminum |
| Material Type | Aluminum |
| Metal Type | Aluminum |
| Model Number | 7354166318411 |
| Number of Items | 2 |
| Projection Distance | 800 Millimeters |
| Shape | L-Shaped |
| Specific Uses For Product | Mountain biking" or "off-road cycling |
| Style | Sporty |
| Style Name | Sporty |
| Theme | Sport |
| Unit Count | 1.0 Count |

## Product Details

- **Material:** Aluminum
- **Brand:** BTER
- **Colour:** Black
- **Style:** Sporty
- **Exterior finish:** Black on Aluminium

## Images

![M4 Hydraulic Disc Brake, Aluminum Alloy 4 Piston Caliper MT420 Left Rear 1400mm Right Front 800mm Brake, Disc Brake Sets for Mountain Bike, Fat Bike, Bicycle - Image 1](https://m.media-amazon.com/images/I/612blsZLJJL.jpg)

## Frequently Bought Together

- BTER M4 Hydraulic Disc Brake Set - Aluminum Alloy 4 Piston Caliper MT420 for Mountain Bike, Fat Bike, Bicycle - Left Rear 1400mm, Right Front 800mm
- CHUMXINY Shimano Tektro TRP Hydraulic Disc Brake Bleed Kit Mountain Bike Brake Bleeding Kit Includes Clear Funnel 120ml Mineral Oil Brake Fluid

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-01*