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  1. Trailer Axles
  2. etrailer
  3. 3500 lbs
  4. 89 Inch Hub Face
  5. 5 on 4-1/2 Inch
  6. 74 Inch Spring Center
Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs
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Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs

Part Number: e43SR
In Stock
$529.20
Trailer Axles
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Trailer axle measures 89" from hub-face-to-hub-face and 74" from spring-center-to-spring-center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and mounting hardware. Easy Grease spindles for simple lubrication. Great Prices for the best trailer axles from etrailer. Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs part number e43SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer Trailer Axles - e43SR

Highlights

  • 3,500-lb Weight Capacity: Built tough for steady, controlled towing and reliable hauling.
  • 89" Hub Face x 74" Spring Center: Common sizing for a balanced trailer stance.
  • Easy Grease Spindles: Built-in zerk fittings simplify bearing lubrication and upkeep.
  • Electric Brakes Included: No hydraulic lines needed—just wire and go for confident stopping.
  • Pre-Greased Hubs & Seals: Ready to mount with bearings, races, and lug nuts already installed.
  • 2-3/8" Round Axle, Underslung Design: Low ride height makes loading and unloading easier.

Features to know about

Smooth Ride and Confident Braking: 3,500-lb Axle with Electric Brakes

A steady ride starts with a solid axle. This 3,500-lb round axle is built from high-strength steel for reliable towing and smooth handling. It measures 89" from hub face to hub face and 74" from spring center to spring center, with leaf-spring seats welded in place for easy mounting. The included 10-15/16" x 2-11/16" hub-and-drum assemblies come fitted with electric brakes that deliver consistent stopping power—no hydraulic lines or actuators needed. It’s a straightforward setup that keeps your trailer tracking straight and stopping clean.

Less Mess, Less Maintenance: Pre-Greased Hubs with Easy Grease Spindles

Packing bearings can be messy and time-consuming, but this axle’s pre-greased hubs are ready to roll right out of the box. The bearings, races, seals, and lug nuts are already installed, and the Easy Grease spindles have built-in grease zerks for quick top-offs without pulling the hubs. That means less downtime, cleaner hands, and fewer chances for contamination when you’re doing regular maintenance.

Close-up of a pre-greased trailer hub with the grease cap removed showing lubricated bearings inside, part of an easy grease axle assembly.

Built for Steady Towing: Straight Axle with Zero-Camber Bend

You can feel the difference when an axle tracks true. The slight upward bend in the center of this straight axle creates a zero-camber angle under load, keeping your tires flat on the pavement for even tread wear and controlled, in-line tracking. The underslung spring seats keep the trailer riding lower for easier loading and unloading while maintaining a confident, predictable tow.

Ready to Work: Complete Assembly and Tested Components

This kit comes complete with everything needed for a solid axle install—electric brake assemblies, hubs, drums, bearings, races, seals, and mounting hardware. The cast-iron hubs are tough and durable, and every piece has been tested to CSA, QAI, and SAE-N standards for braking performance and safety. Designed for 13" to 15" wheels with a 5-on-4-1/2" bolt pattern, this axle gives you a dependable, all-in-one solution that’s ready to haul.

Specs

Weight and Capacity

  • Weight capacity: 3,500 lbs

Dimensions

  • Hub-face-to-hub-face length: 89"
  • Spring-center-to-spring-center length: 74"
  • Drum dimensions: 10-15/16" diameter x 2-11/16" wide
  • Grease cap flange diameter: 1.988"
  • Wheel stud dimensions: 1/2" diameter x 1-1/4" long
  • Axle diameter: 2-3/8"

Diagram of trailer axle showing hub-face-to-hub-face (A) and spring-center-to-spring-center (B) measurement points for determining axle length.

  • A — Hub face (A): Refers to the length of the axle measured from the base of one wheel stud to the base of the wheel stud on the opposite side of the axle (when hubs are mounted on the beam).
  • B — The spring center (B): Is the approximate width of your trailer. It is measured from the center of the spring seat on one side of the axle to the center of the seat on the other. This axle beam comes with the spring seats welded on.

Wheel and Bolt Pattern

  • Hub bolt pattern: 5 on 4-1/2"
  • Wheel size: 13" to 15"

Bearings, Races, and Seal Information

  • Inner bearing: L68149 (inner diameter 1.378")
  • Outer bearing: L44649 (inner diameter: 1.063")
  • Inner race: L68111
  • Outer race: L44610
  • Grease seal: 58846
  • Grease seal inner diameter: 1.719"
  • Grease seal outer diameter: 2.565"

Warranty

  • Limited lifetime warranty

Note

  • Axle does not come fully assembled.

BS35RUW89.00074.000 etrailer by AxleTek 3,500 lb Axle Beam - 89" Hub Face - 74" Spring Ctr

B10E-21 10" Electric Brake Assembly for 3.5K Axle - Left Hand

B10E-22 10" Electric Brake Assembly for 3.5K Axle - Right Hand

19-100 Hub-Drum Assembly Compl Boxed - 3.5K - 5 on 4.5 - PG EZ





Ratings & Reviews

4.4

264 reviews
Review sort icon
Trailer axle measures 89" from hub-face-to-hub-face and 74" from spring-center-to-spring-center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and mounting hardware. Easy Grease spindles for simple lubrication.

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The best service ever. I received my axle way sooner than expected. Great product as well



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I just received the package today and it looks like it is going to make this into a great trailer.



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Good quality, quick delivery, everything fit as expected. Thank you again, etrailer!



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Fast shipping, item just as described. Will definitely buy more items from this seller. Thank you!!



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looks like exactly what I needed, It is always challenging to find trailer parts, so many different types and sizes, the web listings and videos made it very simple, the items arrived very quickly. everything fits properly.

Very Happy!!



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Exact fit fast shipping will always go to for all my trailer needs from now on



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Everything was as described. Good products and fast shipping



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The axle fit perfectly. No instructions but not the first axle I've changed. Backing plate assembly should be pack a little better to keep them from being knocked around. Stellar service, fast shipping. Thanks



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etrailer is the best. I've been dealing with them for years. The orders are always right. The products are top-of-the-line.
Delivery was fast and free.. I have ordered online and I have called and spoken to the sales staff there who were very helpful and knowledgeable about their products. If you have trailers and you don't give a trailer look, you are missing out.



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Was sent an 83 inch axle.



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Great videos that walked me through the installation being I’ve never done something like this before!
The fit was prefect for my trailer.
The only issue was the grease zerts were galled in shipping & I had to replace both zerts.
My recommendation would be for etrailer’s shipper to provide better protection for the axle zerts.



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Made a big difference in stopping my utility trailer when towing with a smaller truck !



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Fits perfectly no complaints



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Very robust and easily assembled product



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The brakes came apart in shipping and there should be directions on how to put it together

Jenny N. profile picture

Jenny N.

6/6/2024

While this is not the way that we want the brakes to be delivered, it does happen from time to time. The brake shoes can be moved back either by hand or tapping them back into place using a rubber mallet.


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Info for this part was:

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