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Hydraulic Trailer Brake Kit - Uni-Servo - 12" - Left and Right Hand Assemblies - 5.2K to 7K
(323 reviews)
Price: $162.32
In Stock
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Hydraulic Trailer Brake Kit - Uni-Servo - 12" - Left and Right Hand Assemblies - 5.2K to 7K
Part Number: AKUBRK-7
In Stock
$162.32
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We'll connect you with nearby partnered installers who know this exact setup.
- All Info
- Reviews (323)
- Q & A (0)
- Photos
etrailer by AxleTek Trailer Brakes - AKUBRK-7
Highlights
- Reliable Hydraulic Braking: Single-plunger drum design gives smooth, consistent stopping power.
- Built to Last: Automotive-grade friction pads are fully bonded for longer life and more torque.
- Fights Wear and Corrosion: E-coated backing plates stand up to dirt, moisture, and road salt.
- Easy Fine-Tune Setup: Manual adjusters use fine-tooth gears for precise brake shoe alignment.
- Keeps Dust Out: Included adjuster plugs seal access holes to prevent grime build-up inside.
- Rated for 5.2K–7K Axles: Fits 12" x 2" drums with 5-bolt flanges and 14-1/2"–16-1/2" wheels.
Features to know about
Restore Confident Stopping Power: Hydraulic 12" Brake Assemblies for 5,200-7,000 lb Axles
If your old brakes are dragging or just not doing their job anymore, these 12" hydraulic drum brake assemblies are a solid fix. They’re built for surge-type hydraulic systems and come ready for both left-hand and right-hand sides. The single-plunger, uni-servo design gives balanced braking with plenty of torque. Sized at 12" x 2", they fit most standard hub-and-drum setups on 5,200 lb, 6,000 lb, and 7,000 lb axles, and they work with 14-1/2", 15", 16", and 16-1/2" wheels.
Built Tough for Long Life: Bonded Automotive-Grade Friction Material
Each brake shoe uses custom-molded, automotive-grade friction pads that are fully bonded to the shoes instead of riveted. That means better contact and longer wear with less chance of cracking or crumbling under load. The tapered edges and circular grinding help keep engagement smooth and prevent mechanical lockup as the brakes wear in. It’s an SAE-N certified material that’s also environmentally safe for use across the U.S. and Canada.
Protected Against Rust and Road Grime: E-Coated Backing Plates and Sealed Adjuster Plugs
Moisture and debris can shorten the life of a brake assembly fast. These units fight corrosion with e-coated backing plates that resist rust and wear. The included adjuster plugs cover access holes to keep dirt out of the adjuster gears and off the friction surfaces, so you get consistent braking performance even in harsher conditions.
Dial In Your Brakes Precisely: Fine-Tooth Manual Adjusters
When you prefer to fine-tune your setup, these manual adjusters give you control over brake tension. The fine-tooth gears let you lock in precise settings, so you can get just the right amount of drag—enough to grip firmly without excess resistance. It’s a straightforward system that many DIYers like because it’s easy to check and adjust as needed.
Certified for Safety and Reliability: QAI and CSA Tested
These assemblies aren’t just built tough—they’ve been thoroughly tested by both QAI and the Canadian Standards Association to meet safety standards for braking performance. That testing covers real-world stopping distances and operation under load, giving you confidence that these brakes will hold up when it matters most.
Specs
Application
- Application: most standard hub-and-drum assemblies, including Dexter, Lippert (LCI), and AL-KO
Dimensions
- Dimensions: 12" diameter x 2" wide
Mounting
- Mounting flange bolt pattern: 5 bolt
Wheel Compatibility
- Wheel size: 14-1/2", 15", 16", and 16-1/2"
Weight and Capacity
- Axle rating: 5,200 lbs, 6,000 lbs, and 7,000 lbs
Warranty
- Limited warranty: 1-year
B12H-41 AxleTek 12" X 2" LH Hydraulic Brake Assembly - Drivers Side - 5.2K, 6.0K, 7.0K Axles - E-Coat
B12H-42 AxleTek 12" X 2" RH Hydraulic Brake Assembly - Passengers Side - 5.2K, 6.0K, 7.0K Axles - E-Coat
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- etrailer mistake
- Wrong item was ordered
- Alternate product found
Ratings & Reviews
4.7
323 reviews
by:
Jason
08/02/2026
The shipping was incredibly fast!
by:
Miguel
10/06/2026
Great great service ships super fasts
by:
Greg T.
09/24/2017
Parts arrived on the date scheduled, the shipper for some reason couldn't find an address that they had delivered to before, this was not any fault of etrailer.com.
All parts fit exactly as they should have and now hopefully I will not have to fix someone else's neglect again, as shown in some of my pics. But if I do I will use etrailer.com.
Big thanks to Shawn for help above and beyond.
All parts fit exactly as they should have and now hopefully I will not have to fix someone else's neglect again, as shown in some of my pics. But if I do I will use etrailer.com.
Big thanks to Shawn for help above and beyond.
by:
Fritz
12/21/2019
Customer service is outstanding!! Excellent value!! I wish there was an etrailer store near me!!!
by:
Craig
04/14/2026
I thought everything was good everything fed up well thanks for your service
by:
Ken
09/18/2025
I was very happy to see you carried the complete brake assembly for my trailer.
by:
Arunas
03/13/2025
Hydraulic Trailer Brake Kit arive good quality on time. Thanks.
by:
Stephen
01/28/2025
Arrived on time in good condition.
Disappointed that the backing plate was NOT pre-drilled for my wash down fittings (boat trailer).
Disappointed that the backing plate was NOT pre-drilled for my wash down fittings (boat trailer).
by:
Tom
09/24/2022
Items are of good quality and easy to install. I had to make a small adjustment on the 5 mounting holes on the backing plate to 7/16" in order to use the original bolts since no hardware is supplied with the kit. The best was that all other parts were already assembled and factory set which made installation fast and easy. Also, by using the kit the cost of the job was less expensive then replacing all of the individual parts. This was a win win-win for me. Thank you etrailer.
by:
Sherman
07/10/2021
they fit as they should. easy install .Had to replace all brake lines so replacing every thing made it easy and not to expansive.
by:
Gary
05/14/2020
The brake plates came fast and was the exact match to what I had.
by:
David
04/21/2022
I was able to use all of the parts except the backing plates because they didnot have the correct hole pattern for my axles.
by:
John S
06/27/2017
This is my third time ordering from etrailer. I have been very pleased with their service, quality and pricing. Shipments have been very quick and packaging very professional. A very good company to do business with and they are highly recommended by me!
by:
Peter
09/09/2017
Easy way to replace old and worn out brakes. Arrived in a couple of days and comes assembled as pictured. Make sure you measure the width of the brake shoe pad and inside diameter of your drum to match up the correct ones.
by:
Dakota
08/28/2025
Great product
by:
James
02/11/2021
Exact replacement for our twenty year old trailer repair.
by:
Michael
02/08/2025
Great product, just as described. Super fadt shipping
by:
Phil
09/08/2023
Perfect fit, quick shipping, great communication, great price.
by:
Russell
07/23/2024
The brake assembly arrived quickly and was correct fit. The best thing about dealing with e-trailer was the associates knowledge. I will shop them first next time.
by:
Dan
02/23/2024
Amazing value. Super fast delivery. Replaces the original AL KO for a fraction of the cost. I understand why so many folks recommended Etrailer to check with and order from.
by:
Randy
04/14/2024
Great service, fast delivery, and just the right quality parts! Would buy again
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Do you have a question about this Trailer Brake?
Info for this part was:
Edited by:
Lindsey S
Expert Research:
Jameson C
Installed by:
Cole B
Installed by:
David F
Video Edited:
Chris R
Updated by:
Wilson B
Written by:
Alexander C
Video by:
Schuyler H
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Gary
5/16/2021
The brakes have worked great over the past year.