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750-lb Capacity. Replace your rear factory bump stops with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and support a heavy load to level your ride and minimize sway. Fits lifted or unlifted Jeeps.
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, everyone, Aiden here with etrailer. Today we're gonna be taking a look at the SumoSprings solo line of custom helper springs. This is gonna come in a variety of different fits, and have different styles of spring. So let's check them out and talk about the differences. Now right away, this is going to be for the rear axle. You can see we've got one installed on our 4Runner today.
That's just one of many fits available, and it's a direct bolt on installation. Now with the rear axle, it's gonna help with a number of things. In any sort of towing applications where we've got a lot of tongue weight on the hitch, bringing the back end down, and the front end of the vehicle up, it's going to help return us to a more normal ride height. Now, unlike an airbag that's adjustable where you can tailor it to each load independently, this is going to be pretty much fixed, but it will provide a lot more support, especially compared to the factory bump stops. Now, this is just an example, because every vehicle fit's gonna be a little bit different, but just the overall height difference between the factory and the SumoSprings option is going to be pretty drastic.
So with these being so much larger, they're going to make contact with the axle a lot quicker, so we get quicker engagement and support. So we don't have all of this open air between the bump stop and the axle, where if we hit a bump with a heavy load, we feel all of this bouncing, or side to side, we don't feel as much sway, because this may contact a lot quicker, and provides that support when we need it. And with the SumoSprings, there are gonna be multiple different kinds. If you're looking at different options, you'll see a blue, a yellow, and a black one, and they are different. They really differ in the density.
Overall function and fit, it's gonna be pretty much the same. For example, on the 4Runner here, one of these black ones is available, but also a blue one. It's gonna be the same fit, but they offer different support. The blue one is going to be the lightest density, the black one is the medium density, and the yellow is the most extreme heavy density. That just means as you get more dense, it provides more support, and all of the weight capacities, depending on the kits, will vary a little bit, but as a general rule of thumb, you can go by that color scheme to find out whether you need the light, medium, or heavy duty option.
Now these feature a progressive spring rate, and what that means is the more they compress, the more they're going to push back and support, and try to bring the vehicle back to its normal driving position. So the initial first bit of compression is going to be a bit softer and easier to move. So for normal day-to-day driving when you have these installed, it isn't going to be as stiff. Then as we get into heavy loads and we start getting pretty extreme compression, it's going to work harder to push back to that normal state, and bring us back to a comfortable driving position. Now as far as the construction goes, it's going to be a microcellular urethane material, as opposed to something like a rubber material. Now the urethane's gonna be very heavy duty. It's gonna work in temperatures from negative 25 degrees Fahrenheit, all the way up to 200 degrees Fahrenheit. So you can expect it to work in all sorts of weather conditions. And this material is going to resist all kinds of oil, road salt, and UV rays. So if it does make contact with the sun, it's not going to weather away, and any sort of road conditions, like road salt in the winter, isn't going to cause this to degrade over time. So whether you're looking for support side to side and limiting body roll in your vehicle, or you're looking for backend support for towing, or maybe just something heavy in the hitch like a cargo carrier, this is going to be a great way to do that. It's a maintenance-free solution, so you don't have to worry about maintaining air pressure in it like an airbag, although you don't get as much adjustability with it. I do think that trade-off is very much worth it, because once it's installed, you don't have to worry about it. The installation process is obviously going to vary depending on what kit you get, so do be sure to use our vehicle fit guide on our website to find the right kit for you and your vehicle. But that'll do it for our Look at This medium density SumoSprings solo line of air helper springs here at etrailer. Thanks for watching.
Average Customer Rating: 4.7 out of 5 stars (2305 Customer Reviews)
750-lb Capacity. Replace your rear factory bump stops with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and support a heavy load to level your ride and minimize sway. Fits lifted or unlifted Jeeps.
We outfitted our 2 door jk jeep with all the things needed for multi week over landing trips. One problem that’s a lot of weight. These helped with the drivability and stability even on the roads in Baja! The jeep has a 2.5” aev lift and 33” tires. We also left on the 2” spacers on the axle for more preload when weighted down.
I just installed these today. SUPER easy. Didn't even take me 15 minutes. I haven't taken the Jeep out for a test drive yet, but I expect the SumoSprings to perform as expected.
Awesome, fast delivery and great customer service
Use these as high speed bump stops and much cheaper than air bumps. Work great!
Good Little hard to install but got them.
This is exactly what I needed! Easy to install and works as it should. Don’t even know it’s there until I pull my RPod.
Nothing to wear out or break! I would definitely order these again!
Very easy installation in about 20 minutes. Very ingenious concept as opposed to bolt on leaf style helper springs
I installed Sumo Springs on our 06 Xterra right after we bought our Casita 17' trailer. The back of the X squatted a bit more than I liked. I had also noticed before some tendency to bottom out if the car was full of people and stuff. These ingenious devices are a perfect solution for me! They are about 3/4" clear of being engaged with the axle when unloaded, so the ride is not overly affected, but progressively take up some of the weight when the back end starts coming down with load. It now sits very nicely with the trailer connected, no weight distributing hitch and stuff in the back, and no more bottoming. We've put a good number of miles on the X in the last year, towing and not towing, and they are still doing the job.
I should note, the back of my Xterra is lifted about an inch with AAL springs. If that were not the case, the Sumo Springs would be engaged all the time. That will vary with vehicle.
I will also note that they are non-adjustable, unlike airbags. I kinda like that, I didn't want to mess with adjusting air pressure and such. But once they do start kicking in as one or both wheels travel, they do stiffen it up quite a bit. I mean, there's no way around that; you can't take load without stiffening the suspension. As such I think they inhibit upward axle articulation a bit when 4-wheeling, but for us that's not a big deal. Since they do not connect to the axle, they don't affect downward articulation at all.
The pics are shortly after installation, one with the car unloaded, and two with trailer and gear loaded up.
I believe it’s going to be a great addition to my truck when pulling our RV. Looking forward to a smoother, more even ride. I left the 2x4 blocks in overnig8ht and drove around to ensure a good seat for the springs.
I originally purchased the yellow sumo for additional support when hauling a small trailer or taking trash to the dump so I wouldn’t strain the vehicles suspension that I just replaced . I also never like to see a truck squat . Yellows were too stiff when unloaded so I got these blues sumo and it was a great decision . The ride type is back to original “comfortable” and the sumo still provides great handling when cornering reducing body sway / shock absorbing bumps. A good investment !
Gave it 5 because of ease of install - note they use SAE threads 9/16, truck frame and oem is metric 15mm wrench. Makes no difference but don't use oem nuts on spring. I installed all shims supplied and this left about 3/4" gap so hoing its the best for my needs. Easy to reduce if needed.
These were shipped to me mid-trip so I had a good chance to do a before and after with same loads/ same roads for 3100 miles. They were easy to install (in my daughters driveway) in about an hour with one reluctant bolt in the original bump stop. I did not install the hard spacer, I figured I’d add it later if needed. I was able to do the install w/o jacking up the whole truck using a 1 1/2 ton jack under the hitch receiver w/ a jackstand next to it. I needed just a few inches as there’s lots of room under the stock height truck (I was lying on a piece of cardboard). The helper springs didn’t quite touch the axle when the jack was removed. When I first drove it in town with the Sumo’s on it they were not really noticeable. When loaded up with my 22’ Livin’ Lite Axxess trailer (4300lbs with 650lb hitch weight) the rear end would squish into the overload springs a good 3/4” but the truck was about level w/o rear end sag.
Driving home over many of the same roads I noticed it was better over railroad crossings and rhythmic bumps on the highway that previously pitched it fore and aft. The trucks manners were much better overall during big hits (like hitting a curb- yup) and pulling off-highway. The trailer is low so it doesn’t go very far off road so I can’t report on that.
Overall for ease of ordering, of install, simple usage w/o need of airlines and effective control of the rearend of the truck and the trailer I feel they deserve the 5 stars.
I bought and installed the 1000lb Sumo Solo springs to help alleviate rear end squat on my 2024 GMC Canyon Denali when pulling my boat. My boat trailer has a long mono tongue with no weight distribution installed. The boat weighs in at about 5500lbs, the truck fender lip measures 38” high unloaded, once I dropped the hitch down on the ball and the Sumos picked up the load, the fenders measured 36.25” equating to an inch and 3/4 squat. Empty the Sumos have an apx gap of 7/8” above the frame rails. The Sumos were recommended over the Timbrens for my situation of infrequent towing with this truck and to maintain the best ride possible when not towing. So far my ride is virtually unchanged when empty and feels controlled when towing. Installation is straight forward but the instructions could be a little clearer with a diagram showing the intended location of the springs. Luckily an etrailer customer had already done the install and provided some pics so there was no question. I chose to remove the tires to have good access and I’d do it again this way. I supported the truck with a jack stand under the receiver. IMHO the proper method to locate the over frame upper clamp brackets is to push the forward clamp as far forward until it contacts the bed stiffener and you’ll be in the correct location then let all the hardware hang to position itself, tighten as required and enjoy.
These Sumo Springs were easy to install, even for a 70 year old guy. I tow a 7,000lb camper and even tho I have a nice WDH I still had som sag on my Tundra. These helped level it out when towing and got rid of “some” of the bounce. They were really a godsend when I overloaded the bed with about 2,000lbs of pavers. That weight squished the Sumos significantly but the truck drove and rode great. Better and less expensive than air bags.
The SumoSprings Solo came to the RV Resort today. I installed them on my Titan SV today in less than an hour. Only drove 10 miles with them and they are what I was looking for. In my opinion it was a needed upgrade and thumbs up!
Big difference in pulling the rv. I have about 545 lbs of Tongue weight.The sumo springs help with the swaying.Thanks again.
I have had these on my Jeep Gladiator for over a year now and I still like them. Sumo Springs really help with sag when towing my Scamp camper trailer and when the truck bed is loaded with stuff. When it is cold outside they are stiffer and I can feel when they hit the stops on hard bumps. Sumo Springs are a very easy overload spring option with factory lift.
While these worked great for the first few months and helped level the load, they have now become deformed and squished out of shape permanently. We have a slide in camper that is on the truck for only for trips otherwise the truck is unloaded and off the bumps. I did not expect them to deform so much, and so easily after only a year of use.
Works great on 2020 ford ranger. Left out the extra spacer because I don't want it riding on the leaf spring all the time. This gave it almost an inch clearance before the sumo touches and starts to help. That is what I wanted to not have it as stiff initially offroad, etc.
Fairly simple to put on but need to work around the brake lines and bed cross beams. I haven’t tried it yet with weight. I have enclose pic of drivers side. Maybe can’t tell from the pic but there is space and flexibility around the lines around bolt.
Works great when I tow my 11,000lb. 5th wheel camper with 1800lb. hitch weight. A bit stiff for everyday driving and hauling of my enclosed utv/snowmobile trailer, so I remove themin the fall.
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