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Heavy loads and trailers can make the rear sag, throwing off braking and steering. These SumoSprings Solo helper springs add up to 1,000 lbs of support at 50-percent compression to keep things level. The sturdy microcellular urethane cushions bumps and takes some of the strain off your factory suspension so you stay in control under load.
You don’t want a harsh ride when the bed’s empty or a sloppy one when it’s full. These springs compress easily with light loads for soft engagement, then stiffen up as weight increases—up to 80-percent compression under heavy loads. That progressive action keeps your ride smooth when unloaded and stable when towing or hauling.
Each spring works on its own side to balance uneven loads and cut down body roll. When you corner hard or deal with side winds, that independent movement helps keep your vehicle planted and reduces sway. It all adds up to a more confident, predictable feel behind the wheel.
These helper springs are built from microcellular urethane that holds up through temperature extremes from -25 F to 200 F. The material resists abrasion, oil, salt, and UV damage, and it compresses vertically with minimal side expansion so it won’t rub or interfere with nearby parts. Once installed, there’s no air pressure to monitor or lines to run—just solid, maintenance-free support every time you load up.
Installing these helper springs is straightforward and doesn’t require drilling. The brackets clamp around the frame rails so you can handle the job with basic tools in your own garage or driveway. Two jounce-style springs are included, giving your rear suspension a clean upgrade that works as soon as you hit the road.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Nick S.
1/26/2026
That is great to hear! I am glad you were able to get it installed, go you! They really do make a difference in the drive, but it also makes your setup look great too. What trailer are you towing?
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?
Claire H.
9/2/2026
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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Mike B.
4/24/2025
Excellent, I also tow a 6x12 cargo trailer which the Sumos do a great job of maintaining a level ride. I also installed Sumos front and rear on my 32 Tiffin motorhome. It utilizes the Ford F53 chassis and I believe they compliment that chassis well. Im definitely a big Sumo fan.