Replacement Trailer Leaf Springs For A 2018 Grand Design Momentum 354M-Class 5th Wheel Toy Hauler

Updated 11/19/2024 | Published 11/18/2024

Question:

I have a 2018 Momentum 354, what replacement leaf springs do I need?

asked by: Rob S

Expert Reply:

Hey Rob,

There unfortunately isn't a guide to tell me the length of your current leaf springs but I am able to see that they're rated for 7k. You would need to jack up the trailer using the leveling system to relieve the pressure on the axles. From there you can measure the leaf springs from center of one eyelet to the center of the other. You can remove one of the wheels to get better access to leaf springs and measure. Once you have the length let me know and I'd be happy to look up the correct replacement for you.

expert reply by: Kevin C

how to measure double-eye leaf springs
(click to enlarge)

Rob S.

11/18/2024

I measured eye to eye, 29.5”, do you carry that? I don’t see it online.

Rob S.

11/18/2024

My mistake, 26”.

Kevin C.

11/19/2024

@RobS It looks like the closest option we carry is 25-1/4" from eye to eye with part # TRU52FR. Did you measure with the suspension hanging or with the trailer still on the ground?