Can Underslung Trailer Axle be Installed as Overslung

Updated 09/08/2025 | Published 06/01/2025

Products Featured in This Question

Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs

(275)

$536.30

Spring Seat for Typical 3,500-lb, Round Trailer Axles with 2-3/8" Diameter

(662)

$16.35

Question:

Can I use one of your axels to replace an over slung axel that I want to keep over slung without doing any modifications to your axel. Thanks.

asked by: Shane L

Expert Reply:

Hey Shane, so the axles we offer like the part # e43SR are designed to be underslung. That means the spring perch is on top of the axle tube. If trailer axles were totally straight this wouldn't be a problem as you could just flip the axle over but they are designed with a bow in them that faces down so if you were to flip the axle the alignment would be way off. So to use this axle in an overslung configuration you'd need to weld on new spring seats on the other side of the axle like with the part # TRSS238. Is that something you'd be able to get taken care of?

expert reply by: Jameson C

Jameson C.

9/8/2025

Hey Shane, did you decide to weld on new spring seats to use the axle in an overslung configuration? I'm asking because your experience could help others facing a similar situation.