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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
I still have alot of sag when towing. The ride is fine but doesn't really help with sag as much as the Tembren but ride better than the Tembren
Great people great company. Very friendly and professional
They were very easy to install. Less than 15 minutes. Good fit
They didn’t help with the squat when I hooked the camper as much as I had hoped for. I had hoped for a couple inches, I got about 1”. It does help with bounce when going over dips and bumps, making the bounce stop quickly.
They helped like they should with a loaded trailer. They do make the ride a little stiffer unloaded. They are so easy to install I may switch them out to the factory bump stops when not towing.
I installed these on a 2026 Ram 1500. I had the Timbrens on my 09 GMC Sierra 1500 and they definitely made the truck feel like you were driving a 3500. These Sumo Springs still give a change to the ride quality over the OEM feel but no where close to what the Timbrens were like. They only sit a 1/2" off the axle so you feel them engage but again nothing huge. The thing that is nice with these is you can remove them and install the OEM bump stops in less then 5 mins. Same with installing them. So my plan is to keep swapping them out as needed. You will need to jack the truck up slightly to get them in and out. No tools requires beyond the jack. Would definitely recommend if you tow occasionally. For reference my trailer is a 16ft enclosed and with a 750lb tounge weight I dropped 2 3/4" stock. With the Sumo Springs I only dropped 1 1/2". The control with them in is what I enjoy the most. Nothing like that feeling of hitting that huge dip on the highway and wondering if your going to bottom out. With the Sumo Springs is solid and no bounce.
Etrailer was awesome on helping me choose the correct Sumo Springs for my truck for what I was pulling!!!
Ease of installation. Once they were assembled, 5 minutes oe bump stop removed and new sumo springs installed. I will follow up when I tow my travel trailer.
They seem to do just what they were intended to do.
Item as described and fast shipping! Very happy.
Works great. Easy to install. Another great product from etrailer!
I am very happy with these overall. They were easy to install and work as advertised. Much bigger and more robust than the factory bumpstops. I ordered them for my '21 Ford Ranger to alleviate the sag from towing my camper. They work well, but if you put on enough weight that they contact the axle constantly, it makes for a jouncy ride. I also added a set of helper springs and together they work very well.
Sumo springs are good and better than helper springs. I made a mistake in ordering the type of load rating I purchased medium springs ride is stiff without load, I should’ve purchased the light springs. Overall these are excellent.
Keeps my truck from sagging and stabilizes my ride in a very cost effective way. Super easy to install as well
Justin
4/12/2025
Still very happy with the way the product works and has held up
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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.