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When weight in the back causes sag and throws off your steering, these helper springs keep things level and steady. The SumoSprings Solo add up to 1,500 lbs of support at 50-percent compression so your ride height stays even and your handling feels consistent. They help your factory suspension carry the load, absorb bumps and shocks, and keep braking and steering response where it should be even when you’re hauling something heavy.
A light load shouldn’t make your ride stiff, and a heavy one shouldn’t make it sloppy. These microcellular urethane springs compress easily at first for a softer engagement, then firm up as weight increases to keep control tight. That progressive action means comfort when empty and solid support when fully loaded—no harsh jolts or bottoming out on rough roads.
When one side of your truck hits a bump or an uneven patch, each spring works on its own to keep things balanced. This independent movement helps level off-center loads, reduce body roll in corners, and minimize sway on the highway. The result is a more planted feel when you’re towing or carrying gear that’s not perfectly centered.
These helper springs are made from durable microcellular urethane that stands up to abrasion, oils, road salts, and UV rays. They perform through extreme temperatures from -25 F to 200 F and compress vertically instead of bulging sideways, so there’s less chance of damage in tight spots. With no air lines or pressure to monitor, they’re completely maintenance-free—just install them and go.
You don’t need special tools or major modifications to get this upgrade done. The custom-fit design bolts into place with a simple, no-drill installation so you can get back on the road faster with better support and handling. Two jounce-style springs are included along with a limited lifetime warranty and a 30-day satisfaction guarantee.

Ratings & Reviews

Heather A.
8/12/2026
Wow thank you for the glowing review Randall. It sounds like once you got them installed they are working out great. That sunset is gorgeous, where were you in this photo?


Lazer S.
5/13/2026
Glad to hear the install wasn't too bad, Michael! Definitely let us know how the ride is once you take it out for a drive! What are you using your Van for? The tires look pretty beefy.

Claire H.
9/1/2026
That is the beauty of SumoSprings! Super easy to install and once they're on you can forget they're there! Are you planning on towing something with your Jeep that you want extra support for?



Gwendolyn Y.
5/20/2026
Looks like you were about to head off somewhere fun, Chad!

Christopher H.
8/4/2026
Happy to hear the # SSR-118-54 was a simple install and is working well for you. This is a great system!
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Pauld
4/29/2019
They are working quite well. They engage a lot sooner than the factory stops. I noticed less sag in the rear when the load from my camper was applied. I often recommend them to people at campground when I see their trucks sagging. Great product.