---
product_id: 166415802
title: "Trailer Brakes - 2 Pair 10\" X 2-1/4\" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2)"
brand: "m-parts"
price: "$995.58"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.ec/products/166415802-trailer-brakes-2-pair-10-x-2-1-4-electric
store_origin: EC
region: Ecuador
---

# 4-hole mounting with lock washers Supports up to 3,500 lbs axle 10" x 2.25" precision fit Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2)

**Brand:** m-parts
**Price:** $995.58
**Availability:** ✅ In Stock

## Summary

> 🚛 Stop on a dime, haul with confidence!

## Quick Answers

- **What is this?** Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2) by m-parts
- **How much does it cost?** $995.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/166415802-trailer-brakes-2-pair-10-x-2-1-4-electric)

## 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

- • **Built to Endure:** Crafted by M-Parts Auto with premium materials for long-lasting, reliable performance.
- • **Complete Balanced Kit:** Includes 2 left and 2 right brake assemblies for full axle coverage.
- • **Universal Compatibility:** Fits Al-Ko, Dexter, Lippert, Rockwell, and Quality Trailer Axles seamlessly.
- • **Secure Mounting Hardware:** 4-hole mounting system with nuts and lock washers ensures rock-solid installation.
- • **Precision Engineering for Safety:** 10-inch diameter brake drums designed for optimal stopping power and durability.

## Overview

This 2-pair electric trailer brake kit features 10" x 2-1/4" assemblies engineered for trailers with 3,500 lbs axles. Compatible with major axle brands like Al-Ko and Dexter, it includes all mounting hardware for a secure fit. Designed by M-Parts Auto, these brakes deliver reliable stopping power and durability for professional-grade trailer safety.

## Description

General duty 10" x 2-1/4" Trailer Electric Brake Assembly that works with 3,500 lbs. Al-Ko, Dexter, Lippert, Rockwell and Quality Trailer Axles. These brakes are rated for 3,500 lbs and have a 4-bolt mounting flange bolt pattern. Manual adjustment is required and adjuster plugs are included. This product is compatible with most manufacturers and comes with a limited 1-year warranty. One left brake. (2 left and 2 right)

## Features

- SPECIFICATIONS - General duty 10" x 2-1/4" Trailer Electric Brake Assembly that works with 3,500 lbs. Al-Ko, Dexter(K23-026-00&K23-027-00), Lippert, Rockwell and Quality Trailer Axles
- DIMENSIONS - 10” diameter x 2-1/4” wide, 4” bolt circle, 3” center hole diameter
- HARDWARE - 4 Hole Mounting. Comes with mounting nuts and lock washers
- INCLUDED - 2 left hand side and 2 right hand side
- M-PARTS AUTO- M-Parts Auto specializes in trailer parts & accessories using the highest quality materials

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | M-Parts |
| Brand | M-Parts |
| Item Weight | 41 pounds |
| Product Dimensions | 10 x 10 x 5 inches |
| Manufacturer Part Number | 77-10-1/77-10-2 |

## Images

![Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2) - Image 1](https://m.media-amazon.com/images/I/81Ehl2BmFyL.jpg)
![Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2) - Image 2](https://m.media-amazon.com/images/I/61ekoZcDw4L.jpg)
![Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2) - Image 3](https://m.media-amazon.com/images/I/51teN9fgfYL.jpg)
![Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2) - Image 4](https://m.media-amazon.com/images/I/51jASxQ27vL.jpg)
![Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2) - Image 5](https://m.media-amazon.com/images/I/61+n3Op+suL.jpg)

## Questions & Answers

**Q: Wil they fit a 1994 transport design TX818A2 car hauler?**
A: they work for 3500lb axles.  Please use the dimension info to see if they fit your hauler:  10” diameter x 2-1/4” wide, 4” bolt circle, 3” center hole diameter

**Q: im converting from hydraulic to electric brakes. my actuator is a tiedown 66. what else will i need? new actuator? controler? part numbers?**
A: Leave the tie down 66 add an electric controller follow the instructions to run the wiring it was a fairly new vehicle you might have a trailer brake wire in your plug which is a lot easier and it could be plug and play in your vehicle to your controller with the correct harness

**Q: how to determine which ones are the right and which are the left?  They all look the same**
A: In this picture they are all the same but when you get them they are marked left and right

**Q: 2000 starcraft 27FS do these fits**
A: These fit tandem axle campers with five lug wheels.  (5 lug nuts per wheel)

Thank you!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value
*by D***S on May 6, 2025*

As others have stated, they forgot to ship the lug nuts. They were fantastic in their quick response and shipping. As for the assemblies, they seemed to be built with quality material and are operating perfectly

### ⭐⭐⭐⭐⭐ brakes work great
*by D***E on March 25, 2025*

worked perfectly

### ⭐⭐⭐⭐ time consuming
*by G***O on June 15, 2025*

that the brakes will come needing some assembly which is quite tedious and some missing parts. Still working on assembly ergo have not actually worked them yet with a load on.

## Frequently Bought Together

- M-Parts Trailer Brakes - 2 Pair 10" X 2-1/4" Electric Trailer Brake Assembly for 3,500 lbs - Trailer Brake Kit, Electric Trailer Brakes, Trailer Brakes 3500lb axle, 2 Left (77-10-1) 2 Right (77-10-2)
- (Pack of 4) WESTERNPRIME Trailer Hub Wheel Grease Seal 10-19 171255TB 1.719'' X 2.565'' for 3500# E-Z Lube Axles
- (Set of 4) WESTERNPRIME 3500 LB Trailer Tandem Axle Bearing Kits L68149 L44649 Grease Seal 10-19 I.D. 1.719'' for #84 Spindle

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-27*