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  1. Trailer Brakes
  2. etrailer
  3. Electric Drum Brakes
  4. 3500 lbs Axle
  5. 10 x 2-1/4 Inch Drum
  6. Camper
  7. Car Hauler
  8. Utility Trailer
Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs

Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs

Item # AKEBRK-35-SA
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Our Price: $123.67
Trailer Brakes
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Shipping Weight: 20 lbs
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etrailer Self Adjust Trailer Brakes - AKEBRK-35-SA
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Self-adjusting driver's-side and passenger's-side electric brakes are 10" x 2-1/4". Brake pads are made of friction material for improved braking and longevity. E-coated backing plates resist rust. Fit 13" to 15" wheels. Lowest Prices for the best trailer brakes from etrailer. Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs part number AKEBRK-35-SA can be ordered online at or call 1-800-940-8924 for expert service.
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etrailer by AxleTek Trailer Brakes - AKEBRK-35-SA

  • Electric Drum Brakes
  • 3500 lbs Axle
  • 10 x 2-1/4 Inch Drum
  • Camper
  • Car Hauler
  • Utility Trailer
  • Self Adjust
  • etrailer

Self-adjusting driver's-side and passenger's-side electric brakes are 10" x 2-1/4". Brake pads are made of friction material for improved braking and longevity. E-coated backing plates resist rust. Fit 13" to 15" wheels.


  • Electric brakes are easier to install and offer more user control than hydraulic brakes
    • Require only an electric brake controller (sold separately) - no actuator or hydraulic lines necessary
  • Automotive-grade friction material is molded to brake shoes
    • Pads are fully bonded - not riveted - to shoes for long life and more braking torque
    • Less chance of cracking and crumbling that can lead to mechanical lockup, thanks to tapered edge and circular grinding
  • Self-adjusting brakes do not require periodic manual adjustment like standard brakes
    • Fine-tooth brake adjustment gears allow for a more precise setting
  • E-coated backing plates resist wear and corrosion
  • Adjuster plugs (included) cover access holes to keep dirt and grime out of the assemblies and off of the shoes
  • Left-hand (driver's-side) brake assembly, right-hand (passenger's-side) brake assembly, and mounting bolts included
    • Nuts and lock washers (BRKH10B) sold separately
  • QAI and CSA certified


  • Application: most standard hub-and-drum assemblies, including Dexter, Lippert (LCI), and AL-KO
  • Dimensions: 10" diameter x 2-1/4" wide
  • Mounting flange bolt pattern: 4 bolt
  • Wheel size: 13", 14", and 15"
  • Axle rating: 3,500 lbs
  • Limited 1-year warranty

Self-Adjusting Brakes Don't Require Routine Adjustment

Standard electric brake assemblies require manual adjustment of the brake shoes over time to provide longer-lasting and more efficient braking performance. With self-adjusting brakes, the brake shoes are always properly aligned, so there's no need to manually adjust the brakes after the initial adjustment. As a result, you get optimum performance without having to take the time to continually perform this type of maintenance.

Thoroughly Tested for Safety

These brake assemblies meet the requirements for certification by the Canadian Standards Association (CSA). The CSA creates standards, which when complied with ensure a safe and quality product. These brake assemblies underwent extensive testing to measure stopping distances when braking. These brakes have also been tested by QAI for braking performance in a complete automotive setup and under real-world conditions to provide the most realistic scenario for the everyday driver.

Automotive-Grade Friction Material

Each shoe on these brake assemblies is lined with automotive-grade friction material for improved stopping performance and longevity. The friction material is fully bonded onto the surface of the brake shoe. This lining is custom-molded for a perfect fit. The edges are tapered to ensure long-lasting performance. This taper, along with the circular grinding that the lining undergoes, helps to prevent cracking and crumbling. This durability helps to prevent mechanical lockup, which can occur when brake shoes are excessively worn or broken.

The friction material is also SAE-N certified, which means that it is an environmentally safe product that complies with California and Washington regulations regarding the composition of brake pads. As a result, this material not only provides high-performance braking that can endure the test of time, but it is also environmentally friendly and safe for use throughout the United States and Canada.

B10EA-21 AxleTek 10" x 2 1/4" LH Self-Adjusting Electric Brake Assembly - Drivers Side - 3.5K Axles

B10EA-22 AxleTek 10" x 2 1/4" RH Self-Adjusting Electric Brake Assembly - Passengers Side - 3.5K Axles

Customer Reviews

Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs - AKEBRK-35-SA

Average Customer Rating:  4.8 out of 5 stars   (1563 Customer Reviews)

Self-adjusting driver's-side and passenger's-side electric brakes are 10" x 2-1/4". Brake pads are made of friction material for improved braking and longevity. E-coated backing plates resist rust. Fit 13" to 15" wheels.


The right brake assembly arrived with the adjuster sprocket and lever misaligned and not even touching one of the shoes, so I had to disassemble that half and put it back together correctly. The assemblies also didn’t come with nuts to bolt them to the axles, so I had to get those separately. Otherwise, they seem to be a good value, especially with the free and quick shipping.

You are correct, these brake assemblies come with the following: Left-hand [drivers-side] brake assembly, right-hand [passengers-side] brake assembly, and mounting bolts. However, the nuts and lock washers are sold separately. We recommend part # BRKH10B
Mounting Hardware for 10" Brake Assemblies
-- Etrailer Expert Katrina B - 06/21/2022


Left hand brake assembly was correct and in working order,, right hand brake assembly was assembled incorrect,, I had to fix it before I put it on the trailer

I am sorry that this happened to you. It looks to me like the right side self-adjuster was knocked loose during shipping and handling. I am glad to see that you were able to correct the situation! Please let us know if you are needing any further assistance.
-- Etrailer Expert Katrina B - 06/21/2022


the packaging was poor at best. nuts and washers were loose in the box hardly any packaging in the box and because of how it was packaged the insulation on some of the wires was worn away and wires were exposed. I wont be buying from them again unless I absolutely have to.

I understand your frustration with receiving the order in this manner. I will share this feedback with our shipping department and I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 08/13/2022
I understand your frustration with receiving the order in this manner. I will share this feedback with our shipping department and I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 08/13/2022


Received these electric brakes today and have them on trailer along with new drums I received on my last shipment from etrailer. Every thing fit great and look good, will test them tomorrow.


The brakes are fine. Easy to install. Disappointed in either quality control or shipping. One of the brakes had both wires cut. I had to splice a new set of wires inside the brake. Easy for me to do, it just made the install take longer. I've included pictures of the damaged wires as well as the other brake that had no damage.

Thank you for sharing! I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 11/09/2021


I added these brakes to the second axle of my tandem-axle trailer to compensate for a very poor quality set from another supplier. The difference in performance is like night and day. There is some concern with one of the self-adjusting brakes overtightening, but etrailer customer service said it should be no problem. Time will tell.

The end result has been quite satisfactory. The overtightening of the self adjusting brake one side only was due to an out-of -round drum, which was a continuing problem. I learned the cause of the problem from another source, but experienced staff at etrailer should have been familiar with the issue. After correction, hauling my 2500 pound sports car 1500 miles was accomplished without further issue. The brakes worked well.
James W - 05/26/2022


Replaced the old electric brakes on my 1984 Gore Trailer and these fit perfect. The bearings and oil seal included in Part BK2-100 we’re also a perfect match!


They came in a box just smahing into each other the whole time. 1 of them got all out of wack in the box, and I had to figure you to get it back in place. They look like decent quality. And arrived quickly.

I will have our Customer Service team reach out to you.
-- Etrailer Expert Jenny N - 04/22/2022

by: 06/03/2022

New upgrade to self adjusting brakes, new drums,


The brakes were very easy to install. The packing was terrible for such a large heavy box.
Hardly any packing material between the units.
One of the springs attached to shoe came loose and I was forced to re-install. Glad I had 2 sets I was able to use one as a guide.

After 1 year no issues or problem. Brakes seem to be working great.
Daniel - 03/28/2022


The product itself seems to be great !
the shipping/packaging was poor, allowing these heavy items to beat against other, actually shifting parts on the backplate significantly to be unusable, as shipped/received. I was able to PRY the parts back into place, as they are under heavy Spring Load.
It looked like the brake pads may have been chipped on the edges, but believe they are still usable.

I like etrailer ! But disappointed in some of their packaging solutions.

I will have our Customer Service team reach out to you.
-- Etrailer Expert Jenny N - 04/07/2022


I was originally looking for just parts to rebuild the brakes on our project trailer when I ran across these. I chose the self adjusting for the ease of it and the parts have worked great. Bolted right up to our axel and have had no problems. Like everything else I own we have abused them beyond their original purpose.

This product has been impressive. We got a lot for our money. I was a little leery of buying something cheap. These were middle of the road price range. When we received them and I opened them up it was obvious these were of better quality than what I was expecting. After a year now we’ve had no problems. Great purchase
John - 01/15/2022


Everything you need to get new brakes again! Love the product quality.


Tows like a dream. With the trailer attached is just like driving with no trailer at all. Brakes are responsive and smooth. I also replaced the drums with Dexter Trailer Hub and Drum Assemblies. All bought from etrailer, all fit perfectly. No problems! Very happy with the product and the results.


In a large box with really no packaging material between the items, pretty sad they can’t spend any time properly packaging As you know how delivery companies like to throw boxes around


First let me say that ETRAILER has been great!! They have helped us out on many of the upgrades and repair parts that we needed. The brake assemblies came to the house faster than expected. I haven't had a chance to replace yet. The assemblies look to be very nice. The self adjusters work on the bench test, I'm looking forward to not adjusting the brakes frequently. It will be nice to have 4 working brakes again! But, as like other reviewers, if your packaging department had put a piece of cardboard between the assemblies. The lining on the shoes would not been damaged, and broken off chunks. Not the end of the world, I just like brakes to work!


The parts (that were right and actually arrived) looked fine but etrailer needs to work or order fulfillment and packaging. One side of the brake kit was electric (what I ordered) the other hydraulic. They were just tossed in a big box with one piece of paper tossed in as padding. Them banging around inthe box chopped up the bag with the nuts I ordered too and half of them fell out of the box through the holes the brakes made. They were very apologetic about the mistake but now I have to send back the wrong part and wait for replacements that hopefully will be right and better shape.


After ordering 2 conplete sets of brakes for well over $XXX for each order and unfortunately, having to return all brakes, we still have not gotten our money back or credited to our credit card from the first set. Not pleased by this service at all. Company gives no timeline on how long it takes to get our money credited back to our account. They say they don't know!! This is an amended review. Very unhappy with this company. If you order from them, hopefully, you will not have this issue. Just hope and pray you don't have to return anything to them. If you do, you may be sitting and waiting for the credit to show on your credit card just like we have been doing.

I will have our Customer Service team reach out to you.
-- Etrailer Expert Jenny N - 05/18/2022


Same as many other reviews, these were very poorly packaged. I had to hammer one of the pads back into place and the backing was scratched up on one set from the other set's bolts. They were packaged together in a box with some wrapping paper on one side and nothing on the other side or in between the two sets. Brakes work well though.

Thank you for your feedback on the packaging and I apologize for the damage to the brakes. I will have our customer service team reach out.
-- Etrailer Expert Jenny N - 07/27/2022


Used these on a custom built offroad camping trailer. Easy install, just don't forget to order the mounting hardware. These bolted right up to the Timbren suspension (ASR3500S06) in about 5 minutes. Also used the 10 inch 5x5 drums to mate to Jeep Wrangler wheels. I would recommend this product and as a whole. Great customer service and fast shipping.



This was an upgrade
to my 2015 Suretrac 5x8 square tube single axle utility trailer. The trailer was not equipped with them when I purchased it. I quickly realized after two trips with a full load that they would easily improve safety.

My tow vehicle came equipped with an integrated brake controller as well as a 7 way rv plug.

I performed this installation with the trailer raised up an only a inch or two, resting on safety stands. !! Of course, a lift would make this operation go much easier. !!


THE etrailer parts were easy to assemble. All fit perfectly together. Obviously I did have to adjust the brakes a small amount to get them within the activation reach.


1) To insure correct wiring it required extra patience and planning. I found the information regarding what wire activated what to be a bit confusing online. Using an inexpensive test light proved extremely helpful. For me it helped to determine from the start each connection point and color code that were meant for each other (in my situation changes in coding took place). To make it go smoothly I drew our a schematic before getting settled underneath. Note: that I have included images of the old flat plug wiring along with the coding.

2) If I were to do this again, I WOULD HAVE spliced the wiring to both L & R brakes before hand. Lying flat on my stomach underneath the trailer and trying to both properly strip and crimp the short pieces of wire from each brake to the 12 gauge lengths of wire was a little tedious.

*Parts list from etrailer:


(1) ET7WK Trailer Wiring 7-Way Upgrade Kit

(2) AKHD-545-35-K Trailer Hub and Drum Assembly - 3,500-lb Axles - 10" Diameter - 5 on 4-1/2
(1) AKEBRK-35-SA Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs

(1) BRKH10B Mounting Hardware for 10" Brake Assemblies

*Additional wiring (below), ties, a few screws, electrical tape, extra crimps and stud crimps, etc. were locally sourced for connecting from the box upgrade kit to both L&R brakes.

(1) 12ft section of white 12 gauge

(1) 12ft section of black 12 gauge

*Additional grease, both tube and tub type were purchased along with large rubber gloves for greasing and hub installation.

NOTE: at this date I have NOT yet driven the trailer with the brakes. I had only tested them by hand spinning each wheel while having someone actuate the [trailer brakes only] from the vehicle.


After about a year of having these, I can only give them 3 stars. They do self adjust, and I admit I LOVE that. That's why I bought them, so that I wouldn't have to keep climbing under the trailer to adjust the brakes. However, these have not eliminated that hassle for me...hence the 3 stars. They self adjust so well that I've had to get under the trailer and back them off TWICE in the last year. They get the brakes so tight that any input from the brake controller would lock up the wheels. I literally had to turn off the brakes to keep them from locking up. I was seriously considering putting these on my other trailers, but not now. I spend more time under my trailer now, than I did before the purchase. I don't have enough time to do that with all 3 of my trailers.

Well, Ive put about 2,000 miles on them this year, BUT, I can say I have not had any further issues. The seem to be performing well, and have needed any more adjustment. I guess they need the initial adjustments to be a little lose.
Tommy C - 08/24/2021


Product came today. Packaging was great. Wish i didn't miss the mounting hardware kit for the electric brake kit.
Will be installing this weekend on my trailer I am restoring.


Kit was good but nuts and lock washers should be provided not have to order separate


My trailer brakes were weak, so I checked them out... 3 of the 4 sets had linings that had come of the shoes. I started checking prices on replacement parts, but found the price of an entire assembly cheaper than a few parts. Called etrailer and spoke with Ashley to confirm part numbers and availability. Ordered a set of 4 complete brake assemblies for my trailer.
The parts arrived within a few days. I replaced all 4 sets in about an hour and 15 minutes! Completely straight forward process! An impact wrench will help remove the 4 nuts from old assembly.
My trailer now has brakes again!! Thanks to Ashley and etrailer for good prices, good information, quick shipping, and great replacement parts!

Pictures show a lining off my original brakes; one new assembly; one new assembly installed; and finally both assemblies installed on one side of my trailer.

Show More Reviews

See what our Experts say about this etrailer Trailer Brakes

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    Image 1 for Image 2 for Image 3 for
  • Difference Between Buying Electric Trailer Brake Kit Set Versus Buying Each Brake Individually
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  • Will etrailer Brake Assemblies AKEBRK-35-SA Fit 2006 Gulf Stream Amerilite LE 21MB
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    Image 1 for
  • Do The Electric Trailer Brake Kits # AKEBRK-35-SA Include Drums
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  • Replacement 10 x 2-1/4 Inch Electric Brake Assemblies
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  • Can the Electric Trailer Brake Kit # AKEBRK-35-SA be Installed on a Boat Trailer
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    Image 1 for
  • Do Self Adjusting Brake Assemblies Affect EZ Lube Spindle Setup
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  • How Many Assemblies Comes with Electric Brake Kit # AKEBRK-35-SA
    The Electric Trailer Brake Kit # AKEBRK-35-SA comes with a left assembly and a right assembly, or enough to do one trailer axle. If you needed to replace 4 brake assemblies on a tandem axle trailer you'd need to order a quantity of two of these kits.
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