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  1. Trailer Brakes
  2. etrailer
  3. Hydraulic Drum Brakes
  4. 3500 lbs Axle
  5. 10 x 2-1/4 Inch Drum
  6. 14 Inch Wheel
  7. 14-1/2 Inch Wheel
  8. 15 Inch Wheel
etrailer Hydraulic Trailer Brakes - Uni-Servo - 10" - Left/Right - 3.5K
etrailer

etrailer Hydraulic Trailer Brakes - Uni-Servo - 10" - Left/Right - 3.5K

Part Number: AKUBRK-35
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Hydraulic drum brakes offer more powerful, controlled, and smoother braking compared to electric brakes. 10" x 2-1/4" Assemblies have premium brake pads and e-coated backing plates. Fit 13" to 15" wheels. Great Prices for the best trailer brakes from etrailer. etrailer Hydraulic Trailer Brakes - Uni-Servo - 10" - Left/Right - 3.5K part number AKUBRK-35 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer by AxleTek Trailer Brakes - AKUBRK-35

  • Hydraulic Drum Brakes
  • 3500 lbs Axle
  • 10 x 2-1/4 Inch Drum
  • 14 Inch Wheel
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • Standard Grade
  • Manual Adjust
  • Single Servo
  • etrailer

Hydraulic drum brakes offer more powerful, controlled, and smoother braking compared to electric brakes. 10" x 2-1/4" Assemblies have premium brake pads and e-coated backing plates. Fit 13" to 15" wheels.


Features:

  • Hydraulic drum brake assemblies are designed for use with a surge-type trailer brake actuator
  • 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 minimize stuttering and brake lockup
  • Single plunger cylinder provides 15 to 20 percent of full braking force when backing up
  • Periodic manual adjustment required
  • E-coat on backing plates fends off rust
  • Adjuster plugs (included) keep internal components free from dirt, grime, and road debris
  • Left-hand (driver's-side) and right-hand (passenger's-side) brake assemblies and mounting bolts included
    • Nuts and lock washers (BRKH10B) sold separately
  • CSA , QAI , and SAE-N certifications ensure quality


Specs:

  • 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" to 15"
  • Axle rating: 3,500 lbs
  • Limited 1-year warranty


Reverse Easily with Free-Backing Brakes

Backing up your trailer might be the only time you don't want the brakes to work. Normally, this would be a job for the reverse lockout on your hydraulic actuator. But if you don't have a lockout, you'll need brakes that will you allow you to back up freely instead.


How do they work, you ask?


A close-up shot of a hydraulic drum brake shows the components of the assembly.

During normal forward braking, a fall-away shoe expands to catch your brake drum with enough force to bring your rig to a stop. When driving in reverse, however, these brake assemblies prevent the shoes from fully catching on the drums. This takes away your braking control, allowing the wheels to continue to turn.


Note: Free backing brakes don't activate when you're in reverse. So, keep in mind that a trailer breakaway kit will not be effective if your trailer were to disconnect from your tow vehicle while you're backing up.


Automotive-Grade Friction Material

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 close-up shot of a 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.


Thoroughly Tested for Safety

A lot of resources have been invested to ensure that these brake assemblies 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 Manually Adjust Trailer Brakes

The more miles you put on your trailer, the more your brake pads will wear down. As they lose contact with the drum, stopping distances get longer and longer. To keep your brakes working great, it's important to adjust them pretty routinely. For this job, grab a floor jack and either a brake adjustment tool (sold separately) or just a standard flathead screwdriver.


Jack up your trailer enough to get the wheel(s) off the ground. Remove the adjuster plugs from the backing plate on the brake, and insert the flat end of the tool through the back of the assembly.


Screenshot from an instruction video shows how to manually adjust the alignment on a drum brake

Push in on the star gear and lift it up. Keep doing this until the brake pads catch on your brake drum. When you can't spin your wheel by hand anymore, back the gear off by about 10 clicks (push down on the star gear). Does the wheel now spin freely (even if it sounds like the brake pads drag slightly on the drum)? Great! Then you're all done with that one and ready to adjust the rest.


How to Break In New Brakes

Once you get these assemblies installed, and your lines flushed with fresh fluid, you'll need to break in these brakes. First, find a long stretch of road or a big, empty parking lot. 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 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.



B10H-41 etrailer by AxleTek 10" X 2-1/4" LH Hydraulic Brake Assembly - Drivers Side - 3.5K Axles - E-Coat

B10H-42 AxleTek 10" X 2-1/4" RH Hydraulic Brake Assembly - Passengers Side - 3.5K Axles - E-Coat





Customer Satisfaction Score:


Customer Reviews

etrailer Hydraulic Trailer Brakes - Uni-Servo - 10" - Left/Right - 3.5K - AKUBRK-35

Average Customer Rating:  4.7 out of 5 stars   (277 Customer Reviews)

Hydraulic drum brakes offer more powerful, controlled, and smoother braking compared to electric brakes. 10" x 2-1/4" Assemblies have premium brake pads and e-coated backing plates. Fit 13" to 15" wheels.

by:

Installed in minutes on my 35 year old boat trailer . Better fit than OEM. Excellent price.



by:

This went into a 30 year old boat trailer. Lost a grease seal and coated the brakes. I wanted to replace everything. I wish I would of bought the hardware with brakes. Would of saved me a 60 mile round trip. Everything went together easy.

Jenny N. profile picture
Etrailer Expert

Jenny N.

1/4/2022

We do have the hardware available. It is part # BRKH10B.



by:

The items came with no nuts and washers or instructions for torque specifications.



by:

because everything i ordered work out great and fast deliverly

Glenn profile picture

Glenn

6/25/2024

Working out great



by:

These brake assemblies came to Me looking great, They fit great, work Great, and best of all was the Great Price and the free shipping! 5 STAR's for this Product. Also I want to give a 5 STAR Rating for Your Customer Support, The Fast Shipping Notifications, and the After the Sale Follow up. Keep up the Great Work.
Brian K.



by:

The mounting studs are extremely short that they can't even mount with the lock washers. It would be nice if you guys could put some longer studs in it.



by:

Excellent service excellent follow-up the first but fit like a glove yet to install the other ones but they are looking good to me



by:

Received the hubs, drums bearings and bearing buddies and installed. The parts were exactly what I needed. A big thanks to Adam for all his help. Will definitely use etrailer again. Many thanks.



by:

The parts were the correct brake kit that I needed and was nice to just have to put them on and not rebuild the backing brake plate. I think it is the only way to go when fixing your trailer brakes and I would recommended them to any one. It would have been way more expensive to fix it any other way.



by:

Okay, but if you look at what I ordered, it was both sides. One came but the other hasn't yet. Weren't both the left and right shipped together as a pair as ordered?

Brooke M. profile picture
Etrailer Expert

Brooke M.

4/25/2024

I looked up your order and the second half has an ETA of tomorrow. If it doesnt arrive, please let us know!



by:

Works just like it should. Thanks for getting it right the first time.



by:

They fit my boat trailer thanks



by:

Very helpful and responsive to questions



by:

It's exactly what I needed for my horse drawn carriage, thank you for the quick delivery I was in a rush.



by:

Great product!



by:

This product made a huge difference on my boat trailer. The pressed studs are good and "bad" on my opinion. The set I replaced had a standard nut and bolt to attached the assembly. The studs are great, but forced me to use a wrench instead of impact to tighten the nuts on because there isnt enough clearance on my application for a socket. Installed fairly easy and there is a noticable difference in stopping ability. To be fair, the set a relaxed had no braking material and was simply metal to metal. I would def purchase again if needed. Great customer service as well. I got an email to let me know the product shipped, and something I havent experienced before, I also received an email from someone to let me know the parts were delivered!

Mike O. profile picture

Mike O.

7/5/2020

A year later and everything is still working together very well. Thanks again for a great product!



by:

Works great



by:

fast service



by:

The advice I got was spot on, and my parts arrived quickly and in excellent condition. Surge brakes and bearings were easy to install. I will continue to buy from etrailer. Thanks!!



by:

Very pleased with the parts and Angela Thank you



by:

great! thanks



by:

Wow, Fast shipping. We're scheduled for delivery on July 11, I received them on Thursday afternoon July 7.
Excellent quality of components and priced fairly. Easy and accurate replacement of my old shoes.....I'm SO GLAD I went this route with etrailer!



by:

As far as I can tell, they look to be correct. The order process was seamless and shipping was extremely fast. I will be delivering these to my customer as soon as some other items arrive, that were ordered through our normal network. You guys have a great setup and I certainly appreciate your service. I have saved your site to my bookmarks for future use. Thank you.

Mike profile picture

Mike

7/28/2023

It worked out wonderfully for my customer.



by:

Very grateful these were available, as I couldn’t locate locally. The only problem was the backing plate hardware didn’t match my Eagle boat trailer, ( my original backing plates had captivated nuts ) but very glad to have trailer brakes again

Thank you, Ray Wolfbrandt
Boyne city, Michigan



by:

These are the way to go easier and cheaper to install then the individual components . Pictire of old and new


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