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1,800-lb Capacity. Upgrade your Toyota 4Runner's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.
Features:
Specs:
Towing or hauling a heavy load can cause rear sag as your factory suspension compresses under the weight of the load. This means that the rear axle is trying to support not only the extra load but also the weight of your vehicle. And because there is less weight on your front axle, your front tires make less contact with the road, which causes problems with traction, steering, and braking. SumoSprings upgrade your vehicle's factory suspension to level your vehicle, improve driving performance, and keep your ride comfortable.
SumoSprings provide progressive load control - the more you load them, the stiffer they become. With a lighter load, the springs will compress easily for soft engagement and a less bumpy ride. The closed-cell urethane material allows for smooth contact between the springs and your vehicle. And the springs act like a shock absorber to dampen road vibration.
The springs can also compress by as much as 80 percent to support a heavy rear load and to help your factory suspension bear up under the load. This evens out the weight, which levels your vehicle and ensures that your front tires are making better contact with the road. A level ride means that you have improved driving control, ensures safe headlight aim, and helps to minimize sway. The springs also support your factory suspension, which helps prevent sagging and reduces bottoming out.
The springs work independently from one another to support each side of your vehicle. This action helps to reduce body roll when you make a sharp turn. This also helps compensate for an off-center load.
These microcellular urethane springs are tough. They resist abrasion, oil, salt, and UV rays that can more quickly wear out other springs, and they perform well in temperatures ranging from -25 F to 200 F (-33 C to 93 C).
SumoSprings compress vertically with minimum expansion to the sides, so they won't be damaged by nearby mechanical parts and they fit safely into tighter spots. And unlike air springs, SumoSprings require no maintenance or adjustment.
The helper springs are custom designed to fit your vehicle, and they install easily - no drilling required.
Average Customer Rating: 4.7 out of 5 stars (2249 Customer Reviews)
1,800-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.I mounted them on my ‘07 Sequioa limited with air springs. They fit very well and work well as an additional overload spring. If the airbags lose air which happens when it’s very cold, it’ll sit on these sumosprings much better than the original bump stops which caused my bigger tires to rub. I’m very pleased with these.
I installed the black Sumo Springs on a 2019 Toyota 4Runner. The fit was easy. Passenger side could be done without jacking the vehicle (although many folks on Youtube said they could not make the install and tighten). I used zip-ties to tie the brake sensor lines away from the pinch points. The Sumo springs are a great option. I tow a 3200# travel-trailer. The Sumos reduced sag at the hitch from 3-inches to one inch, and the wider contact points with the axle clearly provide more stability. I am 4000-miles into an out and back cross country camping trip. The ride while towing is tighter and gives more confidence. Glad I chose these over "air bags".
Easy to install.Did not have to remove the tires on my 2022 Toyota 4runner. Make sure you turn the plate and spring the right way.
These have helped out with the handling and avoided the harsh bottom outs. I frequently tow and these have helped provide a smoother ride and avoid the “hard” hit associated when going over bigger bumps etc.
Jason
12/15/2023
Solid performance from the SumoSprings! Greatly assist when towing and keeping from having too much sag and a harsh ride. Perform great off-road and allows bumps and hits to soak up nicely without a hard noticeable hit.
First time using them I was towing a 2500 pound trailer and the SumoSpring split in half. I requested a refund but they wouldn’t refund my money. They did send me a replacement pair. Which I was not confident in using the product after the failed spring so I sold them on marketplace. Don’t trust the product!
I have always used airbags in the past and this is my 1st time using SumoSprings and I can say I will never go back to airbags! I run a heavy load on a 21’ 4Runner pulling a Teardrop with two motorcycles on stock suspension
I'm 74 and had no problems installing the SumoSprings - with the right tools. The JF has not been lifted and I was still able to install the springs without removing the tire or jacking up the car. The parts fit perfect, and it took me about an hour using the right tools. I will not know how they work, pulling a offroad trailer / camper off-road because I do not go on road trips during the summer. I like the cold, so my trips are between November and April, depending on the weather. I'm sure that the backend will not drop like it's been doing with the new springs.
Quality product. Installation was smooth and easy with no issues. Over 10k miles on them towing a small tear drop trailer and they've aided the rear suspension significantly. No more droppy rear. Folks at etrailer are always available and happy to assist. A bookmarked retailer for sure!
Ride became too hard after installation on my 2018 4Runner. Instead I installed air bags that I deflate and brings back the original ride.
After a year of use, these helper springs do all they were advertised to do. I maintain my OEM ride when lightly loaded, but also have the stability when loaded and pulling a trailer. One thing to be aware of, recently I was carrying a moderate load and riding on a very rough road. The ride was much firmer (and rough) than the OEM ride. This should be expected as the springs were doing what they were designed to do.
Easy to install. Really improved the ride on my Toyota 4 Runner. Less Sag when pulling my boat! Great product!
Worked perfectly on the truck, help with handling as well.
It’s a great product, performs just as advertised.
2019 Lexus GX 460 Install these onto the vehicle the ride is completely smoother It made a huge difference definitely recommended Thank you etrailer.com
Easy to install on your own and they do what they say they’ll do.
Works as advertised!
SumoSpings makes a great line of products! They make a world of difference when the rear is under load.
excellent. great improvement in trailering ride
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Victor
9/2/2023
I pull a 19 foot ranger boat behind my 4runner and your Sumo Springs allow my 4runner to stay level and to handle safely. A must buy!