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1,000-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.
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.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody. Andy here with etrailer.com. Let's take a real quick look at the SumoSprings rear axle solo custom helper springs. Now these springs have been designed to fit your 1990 to 2002 Toyota 4Runner. And on custom-fit parts such as these springs, I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Simply input the year, make, and model of your vehicle, and our fit guide will confirm if these will work for you or if we have something comparable that will work for you.
So as you know, towing or hauling a heavy load can cause rear sag as your factory suspension compresses under the weight of that load. This is going to mean that your 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 the front axle, your front tires are going to make less contact with the road, which is going to cause problems with traction, steering, and braking. So these SumoSprings are going to upgrade your 4Runner's factory suspension to level your vehicle, improving the driving performance while keeping your ride comfortable. These 1,000 pound in capacity helper springs are going to give you progressive load control, meaning the more that you load them, the stiffer they become.
With a lighter load, the springs will compress easily for soft engagement and a less bumpy ride. And the closed-cell urethane material is going to allow for smooth contact between the springs and your vehicle, and the springs are going to act like a shock absorber to dampen road vibration. Now the springs can also compress by as much as 80% to support a heavy rear load and to help your factory suspension bear up under that load. That's going to even out the weight, which levels your vehicle and ensures that your front tires are making better contact with the road, and as you know, a level ride means that you have improved driving control, it's gonna give you safer headlight aim, and help minimize sway. These springs also supports your factory suspension, which is going to help prevent sagging and reduce bottoming out.
So these springs are gonna work independently from one another to support each side of your 4Runner. This action helps reduce body roll when you make a sharp turn. This also helps compensate for an off-center load. Now these microcellular urethane springs are tough. They're going to resist abrasion, oil, salt, and UV rays that can more quickly wear out other springs.
And these are gonna perform well in temperatures ranging from -25 degrees Fahrenheit all the way up to 200 degrees Fahrenheit. So SumoSprings compress vertically with minimum expansion to the side, so they won't be damaged by nearby mechanical parts as they fit safely in tighter spots. And unlike air springs, SumoSprings require no maintenance or adjustment. Now these jounce-style springs are made here in the USA. They're custom designed for your vehicle. They're going to install easily, no drilling required, and you are going to get exactly what you see here. You're gonna get these two springs, you're gonna get two spacers for each spring, and then this mounting bracket here, mounting plate, and then the hardware that you need to get these installed along with some thread lock there, and then you'll get an instruction sheet to guide you through the installation process. Now the weight capacity at 50% is 1,000 pounds, but be aware that SumoSprings do not actually increase your 4Runner's weight carrying capacity. So you wanna make sure that you're not exceeding your manufacturer's recommended weight limit. And these do have a limited lifetime warranty from SuperSprings. Well, I think that's gonna wrap up our quick look today. I do hope that our brief time together was helpful for you. Again, my name is Andy. Thank you for joining me.
Instruction could be a little more deta iled.
Always great customer service and speedy delivery.
SumoSprings easy to install, no issues.
Always the fastest shipping, outstanding customer service and high quality products.
Added 2” spacers on each side so the Sumosprings touch my frame. Relatively easy to install, but centering on the frame was a challenge as the directions tell you to touch the wire harness bracket. I elected to be slightly off center so the bracket did touch to prevent movement and wire damage. Also, once initial installation is performed, you must remove to tighten, which is not in the directions. Overall, the ride has not changed at all and it helps eliminate the drop from my trailer. Highly recommend!
2023 Tundra SR5 TRD Sport. Install was pretty easy, do take the tires off, makes it a lot easier. Just note that the bolts towards the back of the truck will need to be put in and started prior to the other 2 bolts due to the spring partially covering the hole. See the pics and you can see this. But I did finally tow my 9k camper with these installed and it took out the sag of the truck and the floating side to side was next to zero. And the stuff inside the camper wasn't tossed around near as much as it was without these springs installed.
Package arrived intact only 5 days after ordering. Contents undamaged and well packed. On my new 2024 Toyota Tundra the installation was very simple, straight-forward and easy. In my garage I raised the rear of the truck with a floor jack, gathered my tools and started about 45 minutes after the package arrived. Took me about 20 minutes on the drivers side because I lacked any previous experience with this product. Only took about 10 minutes for the passenger side because I was more comfortable after doing the drivers side. I didn't even have to remove the rear tires. Keep in mind that I am a very mechanically inclined yet 68 year old guy laying on a creeper underneath a wet truck. The mounting brackets are very heavy-duty and thickly painted. Actually heavier duty than the originals. Bolt holes in the brackets were exact matches for my Tundra. After lowering the rear of the truck back down there is still approx. 3/4" clearance ( previous 6" clearance measured at the original factory bump-stops prior to removal) between the bottom of the Sumo helper and the axle rest. This is about the amount of clearance I was hoping for---make contact at about 5-1/2". Leaves me about 3/4" free travel during everyday, unloaded driving. Without the Sumo's my truck sagged 3" with 575 lbs camper tongue weight. Raining outside so I'm not going to hook up my camper just to measure the difference today. However, if it now sags even 1 to 1-1/2" less than before, I'll be a happy camper (pun intended).
I gave this a 5-star rating because I received everything exactly as advertised. Also because I can see how this product will absolutely make my camper-towing experiences much more pleasant and safe. And the Limited Lifetime Warranty certainly was a factor. I usually don't take time to write reviews but I was so impressed with the overall quality of this particular product and the ordering process that I felt I owe them that much as a tip.
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