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Heavy loads can make the rear of your truck sag and throw off steering and braking. These SumoSprings Solo helper springs add up to 1,500 lbs of support at 50-percent compression to keep your ride level and steady. They help your factory suspension bear the weight so the front tires stay planted on the road, steering feels more controlled, and braking stays predictable when you’re towing or hauling.
You don’t have to choose between comfort and control. With progressive load control, these springs compress easily for light loads to soften bumps and vibrations, then stiffen as weight increases for solid support when loaded down. The result is a smooth, stable ride whether you’re running empty or carrying serious cargo.
Each spring works on its own to balance the load side to side. That means less body roll through curves, better handling in crosswinds, and steadier control when loads aren’t perfectly centered. Off-center cargo no longer tips the truck to one side—the springs take care of it automatically.
Made from microcellular urethane, these springs handle temperatures from -25°F to 200°F and resist damage from oils, road salts, and UV rays. They compress vertically with minimal side expansion so nearby components stay safe even in tight spots. With no air lines or pressure to manage, they’re completely maintenance-free—just install them once and they’re ready for work every day.
Adding rear suspension support doesn’t have to be complicated. These SumoSprings bolt in place with a straightforward, no-drill install using basic tools. Two jounce-style springs come in the kit, so you can get your truck leveled up and back on the road without extra parts or setup fuss.

Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews

Dane
2/24/2023
Sorry to say but I took it off, the ride without a load is very harsh, I should’ve purchased the softer springs.

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!

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.


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.


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?



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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Justin
4/12/2025
Still very happy with the way the product works and has held up