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If your trailer brakes are dragging or just not grabbing like they used to, this etrailer kit is a solid replacement. The left and right 12-1/4" x 3-3/8" electric drum assemblies fit standard 8,000-lb axles with a 4-bolt mounting flange and work with wheels 15" or larger. They deliver the braking torque you need without the mess of hydraulic lines — just wire them to your brake controller and go.
Manual brake adjustments can be tedious and easy to forget. These self-adjusting brakes automatically maintain the correct shoe-to-drum clearance as the pads wear, keeping braking smooth and consistent every time you tow. The built-in tension cable keeps everything aligned, so there’s no need to crawl under the trailer to dial them in.
These assemblies use automotive-grade friction material that’s fully bonded to the brake shoes — not riveted — for stronger, quieter braking and a longer service life. The tapered pad edges help prevent stutter and lockup, while the e-coated backing plates and protective dust shields keep dirt, grime, and moisture out. It’s a setup made for real road conditions, not just test stands.
Each assembly meets QAI, CSA, and SAE-N certification standards for braking performance and safety. They’re built to fit most standard hub-and-drum setups from etrailer, Dexter, and Lippert (LCI), giving you dependable compatibility with proven components. When matched with an 8K axle and proper hub, these brakes deliver confident stopping power trip after trip.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Kate F.
6/5/2026
Sorry to hear that Merle. Can you please confirm your axle capacity, and is there any numbers stamped on your existing hub so I can see what you currently have? How old is the trailer you are working on? These are 12 1/4", so that explains why they are not fitting your 12" drum, I would like to find you the right parts, just need some more info =)
Tim
12/3/2020
The brakes work like new. no problems.
Do you have a question about this Trailer Brake?
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Mike L.
4/2/2026
I'll get that taken care of for you, Shane.