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etrailer Electric Trailer Brakes - Self-Adjusting - 12" - Left/Right Hand - 5.2K to 7K
(3362 reviews)
Price: $190.68
In Stock
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etrailer Electric Trailer Brakes - Self-Adjusting - 12" - Left/Right Hand - 5.2K to 7K
Part Number: AKEBRK-7-SA
In Stock
$190.68
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etrailer by AxleTek Trailer Brakes - AKEBRK-7-SA
Highlights
- Bolts Right On: Preassembled left and right 12" x 2" brakes fit 5-bolt flanges for quick swap-outs.
- No Manual Adjusting: Self-adjusting design keeps shoes properly aligned—no crawling under to tune.
- Stops Smooth and Strong: Automotive-grade bonded pads give consistent braking torque without screeching.
- Built to Last: E-coated backing plates resist rust and protect from dirt, grime, and debris.
- Certified Safe: QAI, CSA, and SAE-N tested for proven quality and on-road reliability.
- Rated for Heavy Loads: Works with 5,200-lb, 6,000-lb, and 7,000-lb axles and 14-1/2" to 16-1/2" wheels.
Features to know about
Replace Old or Weak Brakes: Direct-Fit 12" Assemblies for 5.2K–7K Axles
If your trailer’s original brakes are worn or dragging, these etrailer 12" x 2" electric brake assemblies are a simple, direct replacement. They fit standard 5-bolt flanges on 5,200 lb, 6,000 lb, and 7,000 lb axles, and work with 14-1/2", 15", 16", and 16-1/2" wheels. Each set includes left-hand and right-hand assemblies that bolt right on and wire easily. Reviewers mention quick installs and perfect fitment that gets them back on the road fast.
Smooth, Consistent Braking Every Time: Self-Adjusting Mechanism Maintains Pad Contact
Manually adjusting trailer brakes can be a hassle, but these self-adjusting assemblies do it for you. As the pads wear, an internal tension cable keeps the shoes properly aligned for consistent braking power. This design maintains optimal contact with the drum, prevents uneven wear, and eliminates the need for routine manual adjustments—so you always get solid, predictable braking without crawling under the trailer.
Built for Long Service Life: Automotive-Grade Bonded Pads and Rust-Resistant Backing Plates
The pads use automotive-grade friction material that’s fully bonded to the shoes for smoother operation and more uniform wear than riveted pads. Tapered pad edges reduce stuttering and lockup during stops. The e-coated backing plates resist rust and corrosion from dirt, grime, and road debris, while included adjuster plugs help keep internal parts clean. This combination delivers strong braking torque and reliable performance over time.
Tested to Industry Standards: Certified Safe for Everyday Towing
Each assembly meets QAI, CSA, and SAE-N certification standards for braking performance under real-world conditions. That means these brakes have been tested for safety and reliability on the road. Whether you’re towing through city traffic or long downhill grades, you can count on consistent braking power that meets recognized quality benchmarks.
Specs
Application
- Application: most standard hub-and-drum assemblies, including etrailer, Dexter, Lippert (LCI), and AL-KO/Hayes
Dimensions
- Dimensions: 12" diameter x 2" wide
Mounting Information
- Mounting flange bolt pattern: 5 bolt
Wheel Compatibility
- Wheel size: 14-1/2", 15", 16", and 16-1/2"
Weight Capacity
- Axle rating: 5,200 lbs, 6,000 lbs, and 7,000 lbs
Warranty
- Limited warranty: 1-year
Note
Note: The brakes will be very hot after doing this, so after every 10 stops you’ll want to wait about 10 minutes to let the brakes cool off before continuing. If you don’t, you might cook and crack the pad material.
B12EA-21 etrailer by AxleTek Electric Brake Assembly - LH - Driver Side - 12" x 2" - Self-Adjusting - 5,200 lbs to 7,000 lbs
B12EA-22 etrailer by AxleTek Electric Brake Assembly - RH - Passenger Side - 12" x 2" - Self-Adjusting - 5,200 lbs to 7,000 lbs
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- Arrived Damaged
- etrailer mistake
- Wrong item was ordered
Ratings & Reviews
4.6
3362 reviews
by:
Kevin Thornton
05/16/2026
The hub came damage. We had to go to the local auto parts store to get new studs and bearings. They were not with the piece when it arrived.
by:
Brian
10/31/2024
These brake assemblies installed easily and were a direct replacement for the manufacturer installed manual adjust brakes.
by:
Don (do it yourself and save $thousands$)
09/01/2026
Perfect fit for my Forest River Sandpiper 365 SRQ 5th wheel. Easy do it yourself task.6000 lb anxles. Order processing, shipping, part availability, pricing and customer service are all top notch, but the packaging department needs much improvement. Both my leaf springs and brake assemblies were only wrapped in thin paper and shipped in light weight boxes, both arrived damaged with parts missing.
by:
Raymond
09/15/2026
These are well made, everything is high quality. The fit was perfect and installation was easy. I watch the video to see if there was anything unexpected that needed to be done. The one thing mentioned is that there should hear/feel a slight drag after installation when spinning the drum by hand and that is exactly how all four were. Couldn’t have been finer. I’ve taken it for a 11 hour trip to the Black Hills and they work as they should.
by:
Scott
05/28/2024
2022
Ram
2500
We had a catastrophic brake failure on one wheel on a recent trip. These were an exact fit on our Dexter axles. Ordering was easy and shipping was quick. Installation was very straightforward. I think these are better quality than the originals.
Scott
5/29/2025
Still working perfectly one year later. We just put a thousand miles on the camper last week.
by:
John
08/10/2026
Ford
Transit Connect
The product installation was smooth, and the new brakes matched the old brakes exactly. 3 stars because of shipping. All 4 brakes were packaged in 1 box with paper padding. During transit, 2 of the brakes had pieces knocked off, which were floating free in the bottom of the box. I was able to reassemble the 2 brakes and had to use a small retaining clip from one of the old brakes.
by:
Eric
10/07/2026
Bolted right up no issues, trailer has great brakes again!
by:
Mike
10/27/2026
Best price, only used 16 gauge wire for magnet connections though.
by:
Joel
09/16/2026
Bought two sets. One set will have to be returned. It came apart in shipping. Weird way of packaging these things.
by:
Matthew
09/10/2025
The breaks work very well. They are more than capable of stopping my fully loaded horse trailer. Great job!
by:
Steve
08/26/2026
Hello Chrissy,
Arrived here in Mcneal on Monday installed on Tuesday had problem with lower spring was not property bent into a hook, Assembly partially fell apart during burnishing phase lost breaks, luckily only five miles from cabin,
Fixed problem, getting ready right now to finish burnishing little time loss but looking forward to hopefully a nice set of breaks. First time using y'all's service, Hopefully a great partner for my parts. Thanks for being there for us. Steve
Arrived here in Mcneal on Monday installed on Tuesday had problem with lower spring was not property bent into a hook, Assembly partially fell apart during burnishing phase lost breaks, luckily only five miles from cabin,
Fixed problem, getting ready right now to finish burnishing little time loss but looking forward to hopefully a nice set of breaks. First time using y'all's service, Hopefully a great partner for my parts. Thanks for being there for us. Steve
by:
Ernie T.
08/12/2017
I sent a question to etrailer.com Re: brake assemblies for my 1964 Airstream RV. I got a prompt response explaining how to measure the old brakes on the trailer to correctly size the brakes I needed. Finding the size allowed me to research the hub & bearing assemblies I also needed. I ordered them all with confidence they'd fit. Installed the self adjusting Electric Brake Assemblies along with the Hub kit with bearings, All parts fit together perfectly. Thanks George.
Ernie T.
8/15/2018
I’m very satisfied with the Brake and Hub Assy’s. I purchased from you guys. I recently had a question regarding Lug Nut Torque on the Hubs. I couldn’t locate any info on the instructions that came in the Boxes nor could I find this Info on the website. I looked in the FAQ’s area & also on the parts info page for the parts I bought. I like finding the Info myself, Usually after hours. I ended up having to call you guys. I talked to Sammie at Customer Service, She didn’t have the exact but did know where to get it. She sent me the Torque Chart with the Torque settings for the Hub and Wheel Type I have. I think that this Info Should be included in the box with the new Hubs and Lug Nuts, Plus easily found on the website. Your Videos and Tips are a Great Extra Plus for us DIY’s like me. I Appreciate Your effforts!! Thanks Again,
by:
Larry
08/25/2026
Great replacement parts, one spring had popped out from the retainer, but after some effort, we got it installed
by:
Russell
04/29/2026
2021
Jayco
Eagle HT Travel Trailer
Fantastic Service! Order Shipped right away. UPS lost part of my order, so I emailed etrailer On Friday night and Saturday they tracked down the missing box and got me an update on the missing part. I then had a question on the install, and they got back to me the same day. These pre-assembled brakes were very easy to install. I will definently be using then next time.
by:
David
08/05/2026
Brakes were a perfect fit and replaced all 6 on my Heartland Cyclone triple axle camper.
by:
Andy
07/29/2026
Shipping practice is atrocious. Set of 4 was just kind of thrown in a box with some seals I ordered as well. They mostly survived but will require a bit of time to straighten out. Whole point of buying these pre-assembled is to not have to mess around with disassembly and reassembly. Some minor gouging on the edge of the shoes and everything is askew. See pictures.
by:
Don
06/28/2026
Ford
Transit Connect
Product is very excellent quality but shipping box tore open in transit due to parts weighing 100 lbs. Suggest two boxes for these products.
by:
Paul
07/14/2026
Feel great, 10.0 full stop, dont move with electric brakes fully pressed.
by:
Marcus
07/10/2020
These brake assemblies were an exact duplicate of the originals I was replacing. If you zoom on the pictures I took the two right side ratchet assemblies are knocked loose due to the shipping being dropped, no fault of the etrailer. The sturdy shipping box came in very handy for kneeling on while working on the brakes as you can see I’m working in the area with gravel all around the wheels. This is my second purchase from etrailer and both purchases have arrived quickly and worthy of their price.
Marcus
7/11/2021
It has taken one of the bothersome maintenance jobs from the check list I had to do to have my 5th wheel road ready.
by:
Delwayne
09/15/2026
I called William answered I ha question he answered all of the give William a raise he knows everything about the etrailer business
by:
Willie
05/17/2026
Being able to buy the whole assembled brake shoe kit was awesome not having to mess with attaching springs! the self-adjusting brakes was nice upgrade feature from previous stock item.
by:
Brian
06/30/2026
I have made several orders with Etrailer in the past and it has always been a great experience with prices, communication, shipping and quality of parts.
by:
Ronald
04/13/2026
The product was exactly what was needed for my application and I did appreciate the assistance by calling a live person for my order. The only draw back with calling in was not being solicited for a discount code to be applied like online ordering does.
I guess that's the cost of calling direct and not being prepared on checkout.
I guess that's the cost of calling direct and not being prepared on checkout.
by:
Brad
03/18/2020
I replaced the hydraulic surge brakes on my trailer with the electric brakes and hardware. I couldn't be happier. They stop on a dime and they take the burden off of my tow vehicle. Excellent purchase. I'd buy them again in a heartbeat.
Brad
3/19/2021
Fantastic!
by:
Timothy
03/29/2026
2023
Ford
F-250 Super Duty
These are exact replacements for the Dexter self adjusting brakes. I ordered 4. Unfortunately one of the assemblies was missing the star nut adjusting arm. I thought that maybe it fell out during shipping but it was nowhere to be found in the packaging. Fortunately I was able to cannibalize one of the old brakes and get it to work.
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Brian
11/2/2025
These have worked as expected since they were installed. Approximately 6,000 miles and still going strong.