Suspension Upgrade Recommendation for a 2021 Momentum Toy Hauler 350G

Question

Question:

I have a 2021 350g momentum toy hauler with the cre3000 Moryde equalizer. I’m wanting to upgrade to something better since my bushings have play as well as new leaf springs since mine are sagging. Not sure if I could go up to 4k springs or stay 3500 without making it too tall. Tandem axles with 35” spread. 1-3/4” leaf springs that are 25-3/4 long 2-1/4” HD wet bolt kit, and a 3” axle tube. Could you recommend some upgrades. Thank you

asked by: Travis H

0

Expert Reply:

Hey Travis, thanks for reaching out!

For standard replacement parts I recommend using the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles # e57SR and the MORryde Suspension Upgrade Kit for Tandem Axle Trailers # MR46ZR. The leaf spring is 25-1/4" long, but if you measured your leaf spring length with a load on the spring then that would explain why you're measuring a little longer.

For more of an overhaul I recommend checking out the Timbren Silent Ride Suspension for Tandem Axle Trailers # TSR14K35T01. This replaces your entire suspension and just has you bolting your current axles to this kit. Instead of using leaf springs this uses the Timbren rubber springs similar to what you'd find in one of their vehicle kits.

I'm attaching a review video of the Silent Ride kit for your reference.

expert reply by: Jon G

0

Robin H.

2/3/2026

Hey Travis, how did things turn out with the suspension upgrades on your Momentum toy hauler? Did the 4,000‑lb leaf springs or the Timbren Silent Ride setup give you the ride height and support you were looking for? Your update could make it easier for the next person planning a similar upgrade.

Answer 1

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 2

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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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

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

We have lift kits for trailer that easily add 2 inches to the height of the trailer. For that you'd want the part #RR23QX and you'd be set. I attached a picture that shows how it installs to give you an idea. This would be the easiest…

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Answer 7

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 8

Hey Jairo. So we do not offer a direct replacement for the Norcold N611, but we do have a good replacement option for you. It really comes down to what will fit in your cutout space. Take a look at the Norcold RV Refrigerator w/ Freezer - 8.2 cu ft -…

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Answer 9

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 10

Hey Eric. Axle spacing isn't the best way to determine what replacement equalizers you need. The most accurate way to find a replacement is to match up a replacing equalizer as close as possible to the dimensions of the one currently on your…

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Answer 11

Hi Calvin! All of the pre-greased hubs/drums, like the Terran Industries Trailer Hub and Drum Assembly - 3.5K Axles - 10" Diameter - 5 on 4-1/2 #TX68VJ, come with bearings made overseas and are all basically the same quality. At least that I…

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Answer 12

Hi Chas, The Lippert Road Armor Shock Absorbing Equalizer part #LC53CK may work for your trailer, but that will depend on what equalizer is currently on your trailer. In order to determine what equalizers would be a fit for your trailer, we'll…

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Suspension Upgrade Recommendation for a 2021 Momentum Toy Hauler 350G

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