Replacement Axle Beam for 2020 Grand Design Reflection 315RLTS

Updated 10/05/2025 | Published 10/01/2025

Products Featured in This Question

Dexter Trailer Axle Beam with E-Z Lube Spindles - 86-1/2" Long - 5,200 lbs

(802)

$299.07

Spring Seat for Typical 5,200-lb to 7,200-lb, Round Trailer Axles with 3" Diameter

(648)

$11.95

Question:

I have a 2020 Grand Design Reflection RLTS315 travel trailer. I want to replace just the beam on one of the axles. My parts list says it is a Dexter axle 7743926. Can you tell me what part number it would be for just the beam? Thanks

asked by: Gina

Expert Reply:

Hi Gina; from what I was able to find that is an 86-1/2" long 5,200 lb axle. For a replacement you can use the Dexter Trailer Axle Beam with E-Z Lube Spindles # 8327816. However, this axle has a spring center measurement of 71-1/2" and it looks like yours is 68-1/2". You can verify this by looking at the axle tag, the measurement will look like "SC=68.50." Assuming that is correct, you will have to cut off the spring seats and weld on # TRSS300 to match your current measurement.

What happened to your axle?

expert reply by: Robin H

Dexter Axle
(click to enlarge)

Gina

10/3/2025

So you do not carry an axle beam that would be an exact fit? Thanks!

Robin H.

10/5/2025

@Gina that's right. We only this one which requires the modification otherwise I would have given you the exact match.

Gina

10/5/2025

Sorry, I missed your question. Our axle flattened out, no idea why. We have not run over anything except the usual bad roads. The local repair shop is saying it would be cheaper to replace only the beam, but they are quoting over $600 to do so,for just the parts.

Robin H.

10/5/2025

@Gina yeah you can definitely do it for less, even if you paid someone to move the spring seats. You might be able to find the same capacity with the spring seats where you need them but I'm not sure. Dexter can certainly provide it if you order a custom axle. I'm assuming your brakes and hub/drum assemblies are fine and can be carried over. Maybe they're trying to replace those along with the leaf springs? That would definitely add up fast, especially if it was all Dexter parts. If it was just the axle and a U-bolt kit like # APUBR-8 that would be a steep price.

Gina

10/5/2025

@RobinH according to them, they are using all existing parts otherwise. Thanks for the info!