---
product_id: 165130579
title: "Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2)"
brand: "m-parts"
price: "S$1251"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/165130579-auto-4-x-self-adjusting-electric-trailer-brakes-assembles-up
store_origin: SG
region: Singapore
---

# 12.25" x 3.38" Size Self-Adjusting 10,000LB Capacity Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2)

**Brand:** m-parts
**Price:** S$1251
**Availability:** ✅ In Stock

## Summary

> 🚚 Haul with Confidence - Your Trailer's Best Friend!

## Quick Answers

- **What is this?** Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2) by m-parts
- **How much does it cost?** S$1251 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/165130579-auto-4-x-self-adjusting-electric-trailer-brakes-assembles-up)

## Best For

- m-parts enthusiasts

## Why This Product

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

## Key Features

- • **Durable Build:** Constructed to withstand the rigors of heavy-duty use, ensuring longevity and reliability.
- • **Compact Design:** With dimensions of 12.25 x 12.25 x 3.38 inches, it fits snugly without compromising performance.
- • **Unmatched Capacity:** Engineered for a robust 10,000LB rated trailer axle, ensuring you can haul with confidence.
- • **Precision Engineering:** Designed to fit popular brands like Dexter and TRP, making it a versatile choice.
- • **Effortless Installation:** Includes 2 left and 2 right hand assemblies for a seamless setup.

## Overview

The Auto 4 x Self Adjusting Electric Trailer Brakes Assembly is designed for trailers with a capacity of up to 10,000LB. This kit includes two left and two right hand brake assemblies, measuring 12.25 x 3.38 inches, and is compatible with leading brands like Dexter and TRP. Built for durability and ease of installation, it’s the perfect upgrade for any serious trailer user.

## Description

Electric Brakes are a valuable alternative to current brake drums. Electric Brakes are the most common braking system installed on trailers. Electronic Brakes require a controller which is installed into the vehicle which allows for electricity to be transmitted correctly to ensure braking happens. There is a magnet located inside of the backing plate which has 2 conductor wires which tape directly into the trailer wiring. When electricity is on, it magnetizes the brake magnet, this magnet is attracted to the drum face, when it contacts this area the friction causes it to rotate which moves the actuating arms which then pushes the shoes out against the drum causing the wheel to stop spinning. The shoes will have a special brake pad material on them that resist the heat caused by the friction. Electric Braking is smooth and jerk less, this is no shock or jerk that can be associated to the e-brakes unlink normal hydraulic brakes. E-brakes are just as fast when compared to generic mechanical friction braking. 1 Year Limited Manufacturer Warranty

## Features

- CROSS REFERENCE - (023-450-00 / 023451-00)(BK-10KE-01 / BK-10KE-02)(23-450 / 23-451)
- WORKS WITH - Dexter, TRP, Redneck
- 2 x Left Hand & 2 x Right Hand
- 12-1/4" x 3-3/8"
- CAPACITY - 10,000LB Rated Trailer Axle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | M-Parts |
| Brand | M-Parts |
| Item Weight | 80 pounds |
| Product Dimensions | 12.25 x 12.25 x 3.38 inches |
| Manufacturer Part Number | 77-1210-1/77-1210-2 |

## Images

![Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2) - Image 1](https://m.media-amazon.com/images/I/41C9khkAUmL.jpg)
![Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2) - Image 2](https://m.media-amazon.com/images/I/81z2rnOlx3L.jpg)
![Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2) - Image 3](https://m.media-amazon.com/images/I/71IIcmj0cUL.jpg)
![Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2) - Image 4](https://m.media-amazon.com/images/I/81YZmJs6XyL.jpg)
![Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2) - Image 5](https://m.media-amazon.com/images/I/714K2B6DKrL.jpg)

## Questions & Answers

**Q: Will these fit my 9k dexter axle i only have four bolt holes in the axle flange i could drill more holes if the 4 holes don’t line up**
A: Before you start drilling you would want to make sure they would work with your brake drum. These have 7 holes. Most likely the brake shoes won’t work in you drums.

**Q: al ko 6 hole mount available for 10k?**
A: Sorry, these brakes cannot be substituted for Al-Ko's 6-hole mount 10k brakes. We currently do not offer Al-Ko's 6-hole mount 10k brakes either.

**Q: Will these work on a 8,000 lb Lippert axle with a 4 mounting bolt pattern?**
A: These are for the dually trailer axles. I think they're (the pads) 3 1/4" wide but they need all 8 bolts to mount with. That's what is your stopping strength!!! Hope this helps

**Q: Will these fit dexter 10k axles on a gatormade 40ft gooseneck ?**
A: Yes. These brakes fit Dexter 10k axles.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality and price
*by A***E on May 15, 2020*

I installed these brakes on my 10k axles last night. The installation was easy and they fit my Dexter brake drums perfectly. I took my trailer out for a drive today and the brakes performed great. The brakes had plenty of stopping power and they felt very solid. These brakes feel very high quality and they are listed for such a good price. The seller shipped the brakes out the day after I ordered them so they arrived very quickly too. 5 Stars. I will definitely be buying these brakes again in the future.

### ⭐⭐⭐⭐⭐ Don't be afraid of the price!  Excellent product
*by B***N on March 18, 2022*

First, the product itself; I was afraid of these initially, they are almost the same price as 1 oem... After handling both, I can't see the difference. They work well, and we're as expected. I will update if I have issues, however I have put atleast 2k miles on them with 12k of steel on the trailer and they work great.Second, the customer service; I ordered these late on a Thursday, needing them Monday at the latest. Amazon estimated Thursday as delivery. I reached out to the seller. They informed me UPS had already ran (it was 4:30). I offered to pay for expedited shipping. The man I spoke with told me not to worry about it, that he would drop it at UPS after he got off. He followed through and they were at my shop Saturday.

### ⭐⭐⭐⭐⭐ Great product at a great price!
*by B***Y on March 20, 2020*

Great product, fit perfect and very easy to install. Worked great for my dexter 10k axles, would highly recommend.

## Frequently Bought Together

- M-Parts Auto 4 x Self Adjusting Electric Trailer Brakes Assembles for up to 10,000LB Capacity Axle, Trailer Brake Kit, Electric Trailer Brakes 2 x Left Side, 2 x Right Side MP11-20 (2 x 77-1210-1/2)
- (Pack of 4) WESTERNPRIME Trailer Hub Wheel Unitized Oil Seal 10-51 (370150BGO) for 9K-10K GD Axles ID 2.875'' x OD 3.880''
- Dexter (K71-148-00) Oil Bath Dust Caps - Application Specific

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-24*