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Recommended Axles, Hubs, Brakes, and All Electrical for a 3,500 lbs Tandem Axle Trailer Build  

Updated 01/27/2026 | Published 01/01/2026



Question:

I am wanting to build a new trailer 18ft with out tongue Im looking at running dual 3500lb axles This is a complete new trailer start to finish can you help me with a list of what I need as far as axles and suspension with electric brakes Thanks

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Expert Reply:

I sure can Rodney. The Dexter Trailer Axle Beam with E-Z Lube Spindles item # 7359765 you were looking at would be a great place to start. This is a 3,500 lbs axle that is 95" long. The 95" is hub face to hub face so the inside edge of your wheels will sit at that measurement.

Here's a list of the rest of the parts you'll need along with how many you'll need to order:

U-Bolts x 2- U-Bolt Kit for Mounting 3,500-lb, Round Trailer Axles - 5-1/2" Long U-Bolts item # APUBR-1

Hubs and Drums x 4- Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 lug nut pattern - Pre-Greased item # AKHD-545-35-EZ-K

Grease Caps for EZ Lube Spindles x 2 - Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2 item # RG04-040

Brake Assemblies x 2- etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K item # AKEBRK-35-SA

Leaf Springs x 4 - 3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 23-1/8" Long item # e59SR

Equalizer, Bolt Kit, and Weld on Spring Hangers - Terran Axle Tandem-Axle Hanger Kit for Double Eye Springs - 3-1/4" Tall Front item # TX65VJ or item # 2-1/2" Tall Middle item # TX75VJ, or 1-1/2" Tall Front item # TX45VJ. You'll only need one of these kits and which one you need is going to be determined by how high you want your trailer to sit. The taller the spring hanger the lower your suspension and axles will sit.

Here are the electrical parts you're going to need as well:

7-Way Connector, Cord, and Junction Box x 1- etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item # e99011

Wiring x 25 Feet - 12 Gauge 2 Conductor Jacketed (Brake) Wire Per Foot item # 12-2-1

Breakaway Kit x 1- Bright Way Trailer Breakaway Kit with Charger, LED Tester, and 5 Ah Battery - Side Load item # 3802346

Tail Light and License Plate Bracket Kit x 1- Peterson LED Tail Light Kit for Trailers Over 80" Wide - 25' Harness - Driver and Passenger item # V944. You'll cut the 4-way connector off and wire the lights directly to the item # e99011.

We've got quite a few options as far as suspension and all these components go. If you're looking for something different than I recommended please let me know and I'll make more specific recommendations. If you have any additional questions, go ahead and click on the box that says Reply to Jerred H and I'll be happy to answer them.

expert reply by:
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Jerred H
AKHD-545-35-EZ-K
AKHD-545-35-EZ-K
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Etrailer Expert

Jerred H.

1/27/2026

Hey Rodney, how did your trailer build go with the Dexter axle and the suspension parts Jerred listed? It sounds like a solid setup for your dual 3,500-lb axles. Sharing how it turned out could help others planning a similar project.

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