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  1. Trailer Brakes
  2. etrailer
  3. Electric Drum Brakes
  4. 10000 lbs Axle
  5. 12-1/4 x 3-3/8 Inch Drum
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
etrailer Electric Trailer Brakes w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right - 10K

etrailer Electric Trailer Brakes w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right - 10K

Item # AKEBRK-10
Our Price: $301.49
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The automotive-grade pads on these automatically adjusting brakes offer lasting effectiveness. 12-1/4" x 3-3/8" Assemblies have rust-resistant, e-coated backing plates and protective dust shields. Fits 15" or larger wheels. Great Prices for the best trailer brakes from etrailer. etrailer Electric Trailer Brakes w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right - 10K part number AKEBRK-10 can be ordered online at or call 1-800-940-8924 for expert service.
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etrailer by AxleTek Trailer Brakes - AKEBRK-10

  • Electric Drum Brakes
  • 10000 lbs Axle
  • 12-1/4 x 3-3/8 Inch Drum
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Standard Grade
  • Self Adjust
  • etrailer

The automotive-grade pads on these automatically adjusting brakes offer lasting effectiveness. 12-1/4" x 3-3/8" Assemblies have rust-resistant, e-coated backing plates and protective dust shields. Fits 15" or larger wheels.


  • Self-adjusting brakes let you maintain optimal braking power at all times
    • Ensures reliable contact between the brake shoes and drums
    • Prevents uneven wear on brake shoes
    • Allows for the perfect setting thanks to the fine-tooth star gear
  • Easier to install and gives you more control than hydraulic brakes
    • Requires only an electric brake controller (sold separately) - no actuator or hydraulic lines needed
  • Automotive-grade brake pads offer superior quality, smooth operation, and excellent braking torque
    • Fully bonded to shoes for more consistent braking compared to riveted pads
    • Tapered edges on pads minimize stuttering and brake lockup
  • Protective dust shields keep internal components free from dirt, grime, and road debris
    • E-coat on backing plates fends off rust
    • Adjuster plugs (included) cover access holes
  • Left-hand (driver's-side) and right-hand (passenger's-side) brake assemblies included
    • Mounting bolts and hardware (BRKH122510) sold separately
  • QAI , CSA , and SAE-N certifications ensure quality


  • Application: most standard hub-and-drum assemblies, including etrailer, Dexter, and Lippert (LCI)
  • Dimensions: 12-1/4" diameter x 3-3/8" wide
  • Mounting flange bolt pattern: 7 bolt
  • Wheel size: 15" or larger
  • Axle rating: 10,000 lbs

Quick Tip: There's really not a whole lot to getting new drum brakes. If you've confirmed that all of the specs listed above line up with what you need for your trailer, you can be pretty sure these will work for you.

Automotive-Grade Brake Pads

The pads on these trailer brakes are made of the same friction material that you might find on a car's drum brakes. In fact, the material is SAE-N certified. So, not only does it provide high-performance braking, but it's environmentally friendly, too! With these brakes, your trailer will be good to go on any road throughout the United States and Canada.

The superior quality of these pads is also due to the fact that they're bonded to the shoes, not just nailed down. Riveted brake pads will always give you a screeching reminder to replace your brake shoes. That's because the rivets will scrape against your drum as the friction material wears down. You won't have that noisy problem with bonded brake pads. You'll also get a little more friction pad contact because there aren't any cutouts for rivets. And more friction means more stopping power.

A closeup shot of an etrailer drum brake shows a tapered brake pad.

These pads are also tapered, which should help to prevent any broken, crumbly bits of material from rotating inside the drum as the pads wear over time. Brakes without these tapers are more likely to create a jarring braking experience that could cause the brakes to stutter and lock up.

Self-Adjusting Brakes Don't Require Routine Maintenance

With typical electric brake assemblies, you need to manually adjust them every now and then to make sure you're getting the shortest stopping distances every time you tow.

A trailer drum brake with a red callout shows the location of a tension cable and pulley on a self-adjusting trailer brake.

With self-adjusting brakes, though, you'll always have peak stopping power - simple as that! As the brake pads wear over time, a tensioning cable will automatically keep the pads in alignment so they'll consistently make contact with your drum when you brake. You won't have to do tedious manual adjustments anymore.

Thoroughly Tested for Safety

A lot of resources have been invested to ensure that these brakes meet the requirements for certification set by the QAI and CSA . Basically, these certifications tell you that these trailer brakes are well built and safe for use on the road. They've been tested for braking performance under real-world conditions to provide the most realistic scenario for the everyday tower.

How to Break In New Brakes

Once you get these brakes installed, you'll need to break them in. First, find a long stretch of road or a big, empty parking lot. Once you're there, set your brake controller to its maximum setting and get moving. Speed up to about 40 mph and brake to slow to about 20 mph. Repeat this 15-30 times. The goal is to get the brake shoes and magnet properly seated into your drum. You'll know you've done that when it feels less jerky (and more consistent) each time you apply the brakes.

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.

B1210E-11 etrailer by AxleTek Electric Brake Assembly - LH - Driver Side - 12-1/4" x 3-3/8" - Self-Adjusting - 10,000 lbs - Dust Shield

B1210E-12 etrailer by AxleTek Electric Brake Assembly - RH - Passenger Side - 12-1/4" x 3-3/8" - Self-Adjusting - 10,000 lbs - Dust Shield

Customer Satisfaction Score:

Customer Reviews

etrailer Electric Trailer Brakes w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right - 10K - AKEBRK-10

Average Customer Rating:  4.7 out of 5 stars   (193 Customer Reviews)

The automotive-grade pads on these automatically adjusting brakes offer lasting effectiveness. 12-1/4" x 3-3/8" Assemblies have rust-resistant, e-coated backing plates and protective dust shields. Fits 15" or larger wheels.


The product was fine but the way they packaged it for shipping was terrible. It came pretty beat up and I had to straighten out the back plates on a couple of them.


The brake assemblies are of excellent quality, fit and finish are very good, with the exception of the adjustment ports which do not align with the star wheel making for an award adjustment.
The assemblies, installed on a tandem axle trailer with 10K axles, perform well, but seem to be a little low on braking power, you can stop the trailer and tow unit using the trailer brakes but even unloaded will not lock. Considering how the performance improved with use a re-evaluation is warranted after being allowed to settle in.

I highly recommend this product.


Packaging was terrible parts were banging around in the box, magnet nocked off and pad were chipped hope the work haven't installed yet


Just what we need to finish the job on time and get our customer back on the road safely. Great Price on the set and Super FAST DELIVERY !!!!


E-trailer makes it very easy to order your brakes and trailer parts they have you in the computer you can go for a couple years and not buy anything and they can tell you with seconds what you bought last, makes it very easy would recommend them to anyone. As for quality of the brakes you get about a year on them I run 5 days a week $85,000 miles a year. If you don't run them as hard as I do with the weight I carry they could possibly last two or three years even more. Self adjusting works great, put them on you don't have to mess with them.


First look there as good as the name brand will be installing them this weekend will make a new review after that but they look


Delivered when promised , and extremely cheaper than I could have purchased locally, E-trailer has definitely acquired another customer


Good brakes. I’ve had them on my equipment trailer for a year. They seem to be holding up pretty good.


They look like they’re good brakes, but the magnets are absolutely garbage they barely work Super weak magnets


Product is fine and a fair price but packaging sucks. Box was big enough for 15 brake assy but I only ordered 4. They were beat up and thrown around inside the huge box. Don't you have a bow that fits the item


Well made assemblies, best choice instead of repairing original. Wise to change whole assemblies




I received my order quickly and correctly. Awesome company to purchase trailer parts from. Great quality.


Good service and quick


Good fit , easy install.


Works great perfect fit. Fast shipping.


The only issue I have is with the packing of the order. The brake assemblies were not packaged very well at all. They were loose in one big box with a little bit of paper inside. They had bounced around enough that one of the magnets had come off the bracket. Luckily the little clip that secures the magnet was still in the box and I could put it back on.


Good part, but doesn't come with me bolts, which i found out is $50 dollars more,,, for bolts really


Perfect fit easy to install, work like when trailer was new.



Working great

by: 06/14/2023

Quick Service, correct parts as adverti sed.


Completely satisfied with the products and I was kept up to date on the status of my order!
Thank you


Excellent products and even better customer service. From the ease of online ordering to the step by step notices of exactly where the product is to the unbelievable professionalism when I made a mistake on my order will definitely use again and again


I be-leave that I have been a customer for about ten years and the service and the attention that I have receive is always professional. etrailer keep a history of my purchase's so when I order repeat items like brakes for my Big Tex trailer they know the parts that I need, I just gave them my name and phone number and within minutes the parts are on the way directly to the trailer repair shop. Great Service


Brakes worked just like factory and loved having the option to order new hardware for easy install and not having to use old rusted bolts and nuts! Will definitely use this place for all future trailer replacement parts


Good product for the price

Show More Reviews

See what our Experts say about this etrailer Trailer Brakes

  • Can Manual Electric Drum Brakes Be Converted to Self-Adjusting By Swapping Brake Adjustment Screw
    Parts from manual and self-adjusting brakes are not interchangeable. Unfortunately, this means you cannot add the # 048-023-00 to your current brakes to make them self-adjusting. There is more to self-adjusting brakes than the adjuster screw so the best option is to replace the brakes completely. For replacement brakes you can use the Electric Trailer Brake Kit w/ Dust Shields # AKEBRK-10. These 12-1/4" brake assemblies have a 7-bolt brake flange pattern and are rated for 10k axles. If...
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  • Replacement Brake Assemblies for Dexter Trailer Hub 9-44
    Your Dexter Trailer Brake Drum # 9-44-1 is designed to fit the Dexter Trailer Idler Hub Assembly # 8-288-3UC1. This drum and hub installs on 9,000-lb to 10,000-lb general-duty Dexter axles made prior to July 2009. The Brake Assembly Set part # AKEBRK-10 would work great with this setup.
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  • What To Do If My Brake Pads Are Breaking Into Pieces?
    It is completely normal for brakes to get warm when towing. Especially if you are doing a lot of braking, heat is natural. Now if the brake pad is falling apart, that is something you will want to address. Having pieces of brake shoe inside the drum could definitely cause excess friction/heat. You may still get decent braking power, but less brake pad = less braking power. Also I would be concerned that you may continue to lose pieces of the brake shoe over time. At this point I recommend...
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  • Replacement 12 Inch Brake Assemblies for Redline EB01-140 and EB01-145 From Dexter Axle
    The EB01-140 and EB01-145 are Redneck Trailer Supply part numbers for a Dexter 12-1/4 x 3-3/8 7-bolt brake assemblies for a 9-10K axle. The proper replacements are available as part # 23-450-451, which includes the left and right self adjusting brake assembly. The mounting hardware is available separately as part # BRKH122510.
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  • How To Manual Adjust My Electric Brakes
    When it comes to adjusting your electric brakes # AKEBRK-10 you will adjust them out until you hear a slight but constant drag of the pads on the drum. There are specialty brake adjustment tools that you can buy locally but if you have the right sized flathead screwdriver you will be ok. There is a star wheel inside the brake assembly, accessible through an opening at the lower, back side of the assemblies. There may or may not be a plug in the opening that you would have to take out first...
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  • Can I Use Self Adjusting Brakes in Place of Manually Adjusting Brakes on my 5th Wheel
    Yes, you can replace your old manually adjusting brakes with a set of self adjusting brakes without any issues. You'll want to determine the size of the drums on your trailer axles, which can usually be easily determine by your axle capacity. If you've got 10 inch drums and tandem/triple 3500-lbs axles then you'll want to use the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA. These assemblies do not come with mounting hardware...
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  • Replacement Trailer Brakes For Dexter 023-451-00 Electric Drum Brakes
    The Dexter Electric Trailer Brake Assembly # 23-451 being the part number 023-451-00 that you referenced is a right side brake assembly. The Dexter Electric Trailer Brake Assembly # 23-450 is the matching left side brake assembly. This is available as a kit # 23-450-451 since I always recommend changing brakes as a set. We have the etrailer Electric Trailer Brake Kit # AKEBRK-10 which will can also be used. These are the same 12-1/4" x 3-3/8" brakes pads as the Dexter brand and they are...
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  • Recommended Hub and Brake Assemblies for Dexter 9k Axles w/ Oil Bath
    Since your trailer was made in 1981 you will need the Dexter Trailer Hub and Drum Assembly item # K08-288-90 you were looking at. This trailer hub is designed for axles made before July of 2009 so unless you have replaced your axle in the last 15 years this is what you want. These are sold individually. You will need two per axle. For a set of brakes you will want the Electric Trailer Brake Kit w/ Dust Shields item # AKEBRK-10. These self adjusting electric brakes are rated for 9,000...
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  • Individual Assemblies that Come with Electric Trailer Brake Kit # AKEBRK-10
    Yes, the left and right hand assemblies of the kit part number # AKEBRK-10 are available as part numbers # AKEBRK-10R for the right hand side and part # AKEBRK-10L for the left hand side. The kit does not include anything beyond just the two assemblies so if you happen to catch our pricing algorithm offering them individually at a better price that's what I would recommend you go with!
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  • Does the 12-1/4" 10K Electric Trailer Brake Kit Come with Magnets
    Yes, the Electric Trailer Brake Kit part # AKEBRK-10 comes with brake magnets, one for each assembly. The magnets are pre-installed into the assembly. It has everything you need besides the hardware to attach like the Mounting Bolts and Hardware part # BRKH122510.
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  • Brake Assembly for Dexter 10k Axle with 12 1/4 x 4 Brakes
    I have a solution for you but part # AKEBRK-10 is not what you are looking for. Instead the Dexter Electric Trailer Brake Kit Left/Right Hand Assemblies part # 23-438-439 is the set you need. The others are just a little too narrow for your application.
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  • Replacement 12-1/4 Inch x 3-3/8 Inch Braking Assembly with Four Bolt Brake Mounting Flange
    If the braking assemblies you have now are indeed 12-1/4" x 3-3/8" and use a four bolt brake mounting flange then you are going to want to use the Electric Trailer Brake Kit w/ Dust Shields part # AKEBRK-8, not the Electric Trailer Brake Kit w/ Dust Shields part # AKEBRK-10. I have attached a photo which shows the correct way to measure your braking assembles for replacement. You will also need to verify that the bolt holes on your brake mounting flange are 3-7/16" apart on center from...
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    Image 1 for
  • Trailer Brake Assemblies for Big Tex with 10k Brake Assemblies
    The correct electric drum brake assemblies for a trailer with 10k axles like yours would be the part # AKEBRK-10. In order to pick out the correct drum I would need more specific info from you though like what is the wheel bolt pattern and what is the brand and age of the axle.
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  • Replacement 12-1/4" x 3-3/8" Braking Assemblies for 10K Axle
    The Dexter 10K axles use 12-1/4" x 3-3/8" braking assemblies whereas the ALKO 10K axes use 12-1/4" x 3-1/2" braking assemblies. Therefore, it sounds like you have Dexter axles and need to use the Electric Trailer Brake Kit part # AKEBRK-10. I really wouldn't pay too much attention to the visuals differences of the assemblies because if the measurements match they will fit.
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    I would be happy to help you choose the correct brake setup for your Dexter Torflex Axle, however there are no manufacturers that currently make electric disc brakes. All disc brakes are powered by a hydraulic cylinder. If you wish to use a disc brake setup controlled by an in-cab brake controller, you will want to consider the HydraStar Electric Over Hydraulic Actuator for Disc Brakes part # HBA16 and an electric brake controller such as the Tekonsha Prodigy P3 Trailer Brake Controller...
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  • Availability of Electric 6 Bolt Mount Brake Assemblies for 10K Axle
    Unfortunately, we don't offer any 6 bolt brake assemblies all the brake assemblies we offer for a 10K axle use a 5 or a 7 bolt mounting flange. According to Dexter, they discontinued those brake assemblies about 20 years ago. The good news is that spare parts are still available. To identify the correct parts, we'll need to know if you have the general or heavy duty brake assemblies. Just measure the existing brake shoes, if they're 3-3/8 inches wide they're general duty, if they're...
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  • Torque Spec for 10 inch Brake Assemblies
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  • Electric Drum Brake and Hub/Drum for 10K Axle
    I linked our main page for all electric drum brakes rated for a 10K axle. These are all 12-1/4-inch diameter but vary in width; 3-1/2-, 3-3/8- and 4-inch widths are available. We have these in both manual-adjust and self-adjust types. For example, part # AKEBRK-10 is a high-value pair of self-adjusting left- and right-hand brakes in the 12-1/4 x 3-3/8 inch size which fits wheels 15-inches in diameter and larger. These brakes use a 7-bolt mounting pattern. We do offer a 10K oil bath type...
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  • Will etrailer Self-Adjusting Electric Trailer Brake Kit for 10,000 lb Axle Work on Dexter Hubs
    Yes, the self-adjusting Electric Trailer Brake Kit w/ Dust Shields # AKEBRK-10 will work on Dexter Axle hub and drums, so long as you have the appropriate 7-bolt brake mounting flange. These brake assemblies are rated for 10,000 lb axles and only require the Mounting Hardware # BRKH122510 to install. I've added a link to a video review for you to check out as well.
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    The differences between the Electric Trailer Brake Kit w/ Dust Shields # AKEBRK-10 and the Dexter Electric Trailer Brake Assembly # 23-450 are the different manufacturers and that the # AKEBRK-10 have dust shields, and the # 23-450 does not. Also # 23-450 is just the driver side brake assembly, where # AKEBRK-10 includes the driver and passenger side brake assemblies. If you wanted the Dexter Kit you would need the Dexter Electric Brake Kit # 23-450-451 which includes both brake assemblies. Both...
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  • Replacement Self-Adjusting 12-1/4 x 3-3/8-Inch Electric Drum Trailer Brakes to Replace 023-451-00
    Brake part 023-451-00 refers to a right-hand Dexter electric drum brake for 9K and 10K-rated axles. The brake dimensions are 12-1/4-inch diameter and 3-3/8-inch width. We do offer this size of brake in 8K, 9K and 10K axle capacities in the self-adjusting variety; these are shown on the linked page. The best value among all is the 10K-rated etrailer Axle Teknology brake pair # AKEBRK-10. These drum brakes work with wheels from 15-inches up to 17-1/2-inches. These use a 7-bolt mounting...
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  • Inner Brake Drum Dimension of Dexter Drum 009-044-01 to Brake Dust Shield Mounting Flange
    I went out to our warehouse to measure the Dexter Trailer Brake Drum # 9-44-1 drum for you. From the inside wall to the inside lip the measurement is 4-1/2 inches where it will come to the dust shield of the brake assembly where it mounts to the axle flange. The brake assembly I recommend for that hub is the Electric Trailer Brake Kit w/ Dust Shields - Self-Adjusting - 12-1/4" - Left/Right Hand - 10K # AKEBRK-10.
    view full answer...
    Image 1 for
  • How to Select Replacement Electric Drum Brakes for Tandem Axle Gooseneck Trailer
    Replacement electric drum brakes needs to be selected based on the axle weight rating to ensure they have the necessary stopping power. We do offer electric drum brakes in your specified size, 12-1/4 x 3-3/8-inches, and this size comes in ratings for 8K, 9K and 10K axles. All are displayed on the linked page. Your axles should have a sticker or plate that indicates their weight rating. You'll also want to note the brake mounting bolt pattern to make sure you choose new brakes that match....
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  • Electric Brake Kit for Dexter 10k Axles and How to Determine the Correct Bearings, Races and Seals
    For the brake kit, there is the Electric Trailer Brake Kit w/ Dust Shields - Self-Adjusting # AKEBRK-10. This is a self-adjusting brake kit that will fit your Dexter 10k axles. Since you have 2 axles, you would want 2 of the # AKEBRK-10 kits. However, not all 10,000 lb. trailer axles use the same bearings, races and seals. You will want to measure the spindle where the bearings and seals ride with a digital caliper # PTW80157 to be sure, I have also included a couple help articles for...
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