Will The MORryde Flip Tread MR42UR Fit on my 2025 Grand Design Momentum M-Class 5W Toy Hauler

Updated 05/08/2026 | Published 05/03/2026

Products Featured in This Question

MORryde Flip Tread RV Steps for 23-3/4" to 28-1/4" Wide Doorways - 4 Steps

(18)

$607.53

Question:

Part Number: MR42UR Will this fit the rear door on my GD Momentum 2025 351MS? The opening is 28-3/4. I believe it will but I want to confirm.

asked by: scott m

Expert Reply:

Hey Scott! Thanks for reaching out.

You’re really close on this one. The MORryde Flip Tread RV Steps # MR42UR are designed for door openings between 23-3/4" and 28-1/4" (measured flange to flange), and your opening at 28-3/4" is just slightly over that range.

Because you’re only about a 1/2" wider, it’s still something you can make work. In most cases, adding a small piece of trim or a spacer will take up that extra space and give you a nice, solid fit. Since it’s such a small difference, you may even find it fits snug enough without much adjustment.

These steps are pretty cool so I see why you want to make sure they will fit!

expert reply by: Gwendolyn Y

MORryde Flip Tread
(click to enlarge)

Scott M.

5/7/2026

Thank you

Gwendolyn Y.

5/7/2026

@ScottM Anytime! Always happy to help so let me know if you ever need anything else.

Tracy

5/8/2026

i damaged the stairs on my brinkley. ordered these that are not as wide as stock i just centered them and they work and look fine. in your case could check with moryde as they make wider ones that may fill up your space better or see if brinkley will sell to you.