SumoSprings for Grand Design Momentum 21G Travel Trailer Toy Hauler

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Question:

I have 7K tandem axles on a GD Momentum 21G. Which is proper SS and do I need to install a new contact plate? Does trailer need tires and weight lifted off ground or can I use my tongue jack and other support jacks to get under and instal assuming I have working space?

asked by: Dave

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Expert Reply:

You will need 2 sets of the SumoSprings Trailer Helper Springs # SS26MV on your Grand Design Momentum 21G. These will fit your overslung axles and are rated to work on axles with a capacity of 5,000-8,000lbs. The information I could find says your camper came with 5,200lb axles but will still work if you have upgraded 7,000lb axles. I couldn't find exact information on the spring plates on your Momentum but as long as they are not more than 5-1/2" wide or 3/4" thick you will not need a new U-Bolt Plate # CE20003G.

Depending on your working area will really determine the best way for you to install these. I do recommend having a jack and stands to lift the weight off of the suspension making installation of the springs easier. You may also need to relocate any gas lines that run down the frame rail so this may require more of a working area to be able to access everything for the installation.

expert reply by: Bud M

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Answer 1

We offer axle u-bolt kits and individual parts too, as well as shocks, equalizers and shackle straps and other RV suspension items. You can see all categories on the linked page. Some of these parts are weight-rated but others are not. If you scroll…

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Answer 2

Hey JT! Sorry to hear about your trouble with the leaf springs. Hopefully there wasn't a lot of damage and everyone stayed safe. From what I have found the 26E-3500 is the same as the Dexter 072-027-00. This is the 6-Leaf Double-Eye Spring for…

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Answer 3

You can use leaf springs that are rated higher than the axle without any issues as long as they measure the correct measurement for your trailer. For example the 6-leaf double eye spring for 7,000 lb axles part #e64SR measures 24-7/8" eye to…

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Answer 4

Hello Steve, thanks for reaching out. In my honest opinion, leaf springs are leaf springs. There is not going to be a noticeable difference in quality or longevity between the different brands. As long as the length of the spring is correct and the…

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Answer 5

Hey Richard! How did you measure your current leaf springs to get the 25-1/2" eye to eye measurement? We recommend jacking one side of the trailer up to get the weight off of them before measuring because they stretch out quite a bit over years…

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Answer 6

I understand your worry Tom, and I have a couple recommendations. First is the MORryde ALLTREK 4000 Shock Absorbing Equalizers #MR89DR which has a height of 4-1/2" for the mounting bolts. This is also 6-1/2" in width like the shorter…

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Answer 7

The determine the correct replacement leaf spring on your 2021 Coachmen 259FKDS you'll need to lift your trailer frame so the spring is hanging freely and then measure from center-eye to center-eye, then for the equalizer you need to measure…

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SumoSprings for Grand Design Momentum 21G Travel Trailer Toy Hauler

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