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A heavy front load can make your vehicle sag and mess with steering or braking. These SumoSprings Solo helper springs add up to 1,000 lbs of support at 50-percent compression to keep the ride level and steady. The microcellular urethane material cushions bumps and helps your factory suspension handle the extra weight, so your steering stays confident and your headlights stay aimed where they should.
Every load and road surface is different, so these springs adjust as they compress. Lighter loads engage softly for a comfortable ride without harshness, while heavier loads compress by as much as 80 percent to give solid support. The progressive rate design absorbs shocks and vibration so your vehicle feels stable and composed whether cruising the highway or rolling through rough pavement.
Sharp turns, uneven driveways, or crosswinds can throw off balance, but these springs respond independently to each side of the vehicle. That means less body roll when cornering and less sway when passing trucks or dealing with off-center loads. The result is a more planted feel and better control in everyday driving.
The closed-cell urethane material stands up to oil, road salt, and UV exposure without breaking down. It performs reliably in temperatures from -25 F to 200 F, compressing vertically with minimal side expansion so nearby components stay safe. With no air lines or compressors to maintain, these maintenance-free springs just work—trip after trip, season after season.
Adding front-end support doesn’t have to be complicated. These custom-fit jounce-style springs bolt right into place with no drilling required. Just solid, straightforward design that fits tight spaces cleanly so you can get back on the road with a stronger, more stable suspension setup.

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Jeff: Hello, everybody. This is Jeff at etrailer.com. Today, we're going to take a look at the SumoSprings Solo Custom Helper Springs for the front axle. This is a custom fit part. It is designed to fit the 2002 and newer Freightliner M-2106 and 112 trucks, with either air springs or inaudible 00:00:18 springs. Because this is a custom fit part, I always like to recommend for you to go to our website, use the fit guide, put in your year and model vehicle, and it'll show you if this'll work for application.These helper springs will upgrade your vehicle's front suspension for improved driver control and comfort to help support heavy front-end loads to keep your vehicle level, and they help to absorb any bumps and shocks, helps minimize sway.
They do use progressive load control, which means the springs will compress according to the weight of your cargo. If you have a lighter load, the springs will compress easily at first for a nice, soft engagement and less bumpy ride. If you get a heavier load, the springs will compress by as much as 80% for support. These do work independently from each other, compensate for any off-center loads, help reduce body roll during sharp turns.The springs themselves, they are made of a durable microcellular urethane. It's designed to work in temperatures from a -25 degrees Fahrenheit up to 200 degrees Fahrenheit, and the material does resist damage that can be caused by oils, road salts, and UV rays.
It does offer minimal lateral expansion, meaning the springs will compress vertically instead of to the sides, so they aren't easily damaged when operating in tight spaces. Of course, they're maintenance-free, because there's no tubing to run or air pressure to monitor like with air springs.These are very simple; no drill installation. It comes with the two inaudible 00:01:42 style springs, the spacers, the brackets and hardware you need for installation, nice set of instructions, and they are made in the USA. A few specs on this; the weight capacity at 50% compression is 1,000 pounds. These SumoSprings will not increase your vehicle's weight carrying capacity.That should do it for the review on the SumoSprings Solo Custom Helper Springs for the front axle..
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews

Lazer S.
10/21/2025
30 Minutes for all 4?! That's got to be some kind of record, Dennis! Glad the process was nice and easy and I hope they serve you well. Let us know if you do end up needing to go to the heavier duty yellow option as well, we always like to get real life experiences from people. : ) Any more trips planned for the year?

Claire H.
7/6/2026
That is awesome to hear! It must be such a relief to not have to put so much energy into controlling the wheel while driving now.

Gwendolyn Y.
4/2/2026
That's awesome to hear, Edwin! Where did you head off to?
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James D.
8/3/2026
Appreciate you leaving a review Austin, It's always nice when a product exceeds expectations and these springs have been highly rated. Are you typically off road or do you plan on towing?