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When you’re hauling gear or towing a trailer, rear-end sag can throw off steering, braking, and headlight aim. These SumoSprings Solo Custom Helper Springs add up to 1,500 lbs of support at 50-percent compression to keep your ride level and steady. The microcellular urethane material cushions bumps, absorbs shocks, and helps your factory suspension handle the extra weight without bottoming out.
Whether the bed’s empty or packed full, these springs adjust naturally to the weight you’re carrying. With light loads they compress easily for a softer ride, and with heavier loads they firm up—compressing as much as 80 percent—to give strong support. This progressive spring rate keeps driving smooth when unladen and stable when loaded so you can tow or haul without the jarring ride of stiffer setups.
When a curve or uneven load tries to push you around, each SumoSpring works on its own side to keep things balanced. That independent action helps reduce body roll and sway so your vehicle feels planted through turns, crosswinds, or when pulling into a sloped driveway. It’s a solid confidence boost when hauling on winding roads or busy highways.
Built from a closed-cell urethane that resists abrasion, oils, road salts, and UV rays, these springs hold up in real-world conditions from -25°F to 200°F. They compress vertically with minimal side expansion for a snug fit in tight spots and won’t get damaged by nearby parts. With no air lines to run or pressure to monitor, they’re completely maintenance-free once installed.
Adding suspension support doesn’t have to mean major garage time. The SumoSprings bolt right onto existing mounts with no drilling required. You’ll have a clean install that fits securely and gets you back on the road with better load control and comfort without any extra hassle.
Customer Satisfaction Score:
95% were satisfied with this product
5% of customers were not satisfied
Ratings & Reviews
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
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.
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!
Gwendolyn Y.
4/23/2026
Thanks for the awesome feedback, Jeff! Love hearing that the install was a breeze and that you noticed such a big difference in handling, that’s exactly what you want after the upgrade. Really appreciate you sharing the photos too, it’s always fun to see the comparison.
Gwendolyn Y.
1/8/2026
Glad the Sumos are helping make your loads easier to tow!
Richard
2/12/2026
No issues. Towed a 27 Airstream around 4k miles & its all good.
Lazer S.
2/12/2026
Mike
7/31/2025
The springs are working exactly as expect. I have need up to the mountains numerous times and to Monerary to the Sea Otter bike fest. They have reduced the body roll and helped keep the truck stable on the mountain roads or when loaded down for camping. Im very pleased I added these Sumo Springs to my Tacoma.
Jon G.
7/31/2025
Lazer S.
9/16/2025
Glad to hear they are helping, Cory! If you are feeling them going over speed bumps, I think taking one of the spacers out is a good idea. Especially if that is happening when you are unloaded. Speaking of which, what are you towing?
Lazer S.
9/23/2025
Albert
7/16/2025
Still working like new. So much better than the factory bump stop.
Andrew N.
10/21/2026
Hey John, thanks so much for the detailed response and photos. That really helps other folks on the page. I'm glad install went well and you're liking them! I have these sumosprings on my Nissan Titan and it's a huge upgrade for towing!
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Brooke M.
3/25/2025
I appreciate your explaining your experience with these and I'm happy to see you got them to work well for you. I think future readers will be grateful you took the time, too! :)