Arrives before Christmas To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
1,900-lb Capacity. Upgrade your rear suspension by installing these helper leaf springs above your vehicle's factory leaf springs. They significantly reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads.
Features:
Specs:
These additional leaf springs add support and sway control to your existing OEM suspension. Just bolt on SuperSprings over your existing factory springs, and they automatically work when you need them. As the factory spring flexes, a roller at each end of the beefy helper spring reacts to engage the helper spring and to provide extra support. The springs help to better distribute cargo weight throughout your existing suspension, channeling that weight to the points on the frame that are designed to support heavy loads.
Placing these leaf springs above your factory springs helps to keep your OEM springs from twisting, so the SuperSprings act like a sway bar, reducing the body roll that makes driving more difficult and dangerous. With these helper springs, driving is safer and easier when it's windy, when your vehicle is rocked by a passing semi, and when you are cornering. The springs help to reduce sway by up to 30 percent. SuperSprings also allow more wheel travel in the rear suspension when they are under load, so they maintain traction and ride comfort better than rubber or polyurethane bumpers. That means they're great for drivers who frequently tow.
You can also customize the level of support provided by SuperSprings. For most models, the shackles that attach the helper leaf springs to your existing leaf springs have several installation options:
SuperSprings are a maintenance-free, low-cost alternative to air spring systems, which require constant monitoring and air pressure adjustment. These helper leaf springs respond automatically to the load you carry, so there is no crawling under your truck to adjust them. You'll also reduce wear and tear on your suspension, brakes, and tires, which saves you money. The bolt-on installation means that they are easy to fit - no drilling required.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Welcome back, etrailer family. This is Steven, today we're looking at the SuperSprings Custom Suspension Stabilizer and Sway Control Kit. Now this is a vehicle specific fit, so I'll put that up on the screen there above my left shoulder. This fits a '07 to 2021 Toyota Tundra. Now with everything here to etrailer that's a custom fit, please go to our year, make, and model custom fit guide on the website. Make sure you're getting the right parts the first time.
Just plug in the vehicle year, make, and model, and we'll help you get that. Now this system is gonna reinforce your vehicle's rear suspension system with adding an extra leaf spring that's gonna prevent sagging and reduce that sway by up to 30%, which is pretty impressive. It's gonna work pretty much like a sway bar. You know, it'll stabilize your OEM springs, but also help keep them from twisting, bending. It's gonna help compensate for windy conditions or wind turbulence from big rigs passing you, sudden weight shifts from cornering tight curves, that kind of stuff.
They do help lift your truck when you're carrying a heavy load and thus preventing you from bottoming out. Now they do adjust automatically to your payload. So if you got a lighter, heavy payload, they will adjust automatically to that, and there are rollers built onto each side of these. Now I've got that front one there kind of position, how it's gonna look when it's installed. But anyways, it's got these rollers built in here and those rollers on each end of these springs are gonna activate when the OEM springs flex under a load and they will then deactivate when the OEM springs are not under a load, so pretty neat how they work.
There's some stickers on the side of these. Lemme see if I can show you one real quick. And they very clearly say on different spots, Do Not Tighten. So keep in mind some of these bottom ones already come tightened from the factory. You don't have to mess with those, you don't have to do anything with them.
Now this can be customized. So the shackles that attach to the SuperSprings here, they're gonna provide several options for insulation. You can check the instructions that are included to get that, but basically you want to choose a setting that's gonna increase load support and ride height for constant heavy loads or compensate for minor spring fatigue in some, you know, like an older automobile or older truck or something. You do wanna choose a setting that's gonna maintain the original factory ride condition and minimize the effect of the unloaded ride quality and height. Now they pretty much installed easily, they just bolt on above your existing factory springs. You don't have to do any drilling whatsoever. And like I was saying, there's some models out there with factory springs that sit above the axle. The included poly spring pads here, that's gonna prevent those from shifting. So this bottom guy here would go underneath this spring, then this spring would go in between here, okay, and then this top part would be on top. So kind of hard to see here, but this would be in between those two pieces there. And again, that's gonna them from shifting. It's a very dense polyurethane block and again, they sit between the top of the factory springs and underneath these springs, no maintenance required. There's no tubes, air pressures to monitor, or you know, adjusting things like you do in air shocks, air springs. And this will save you money in the long run because it's a one and done thing. These do help extend the life of your brakes, tires, and factory suspension. And they cost a lot less than the air spring systems that you've seen out there. Now these are made here in the good old USA. They're rated at 1,900 pounds. And by adding these, keep in mind, you're not gonna increase your vehicle's weight carrying capacity. Again, these are just helper springs, so you're never gonna add anything to your vehicle that's gonna help carry more weight, okay Just keep that in mind. Now for non-commercial applications, using these on non-commercial, they'll give you a five year warranty. If you're using it for a commercial application, then they're only gonna give you a two year warranty. So just keep that in mind. Well, again, I'm Steven here with etrailer.com, I'm looking at the SuperSprings with you for the '07 to '21 Tundra. I hope this helps you and I hope you have fun out there with your rig, with your new parts. Have a great day.
Average Customer Rating: 4.7 out of 5 stars (2496 Customer Reviews)
1,900-lb Capacity. Upgrade your rear suspension by installing these helper leaf springs above your vehicle's factory leaf springs. They significantly reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads.
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.
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.
Very easy installation in about 20 minutes. Very ingenious concept as opposed to bolt on leaf style helper springs
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".
I got the springs installed last week and wanted to have a drive time before I wrote the review.
The height of the springs are perfect for my 2016 Tacoma, They keep the truck stable and nearly eliminate the body roll I had before installing them. I am heading to the mountains in a couple weeks, so I will update the review when I get back. That way I will know for sure the body roll is gone and the truck is stable on the winding mountain roads.
The springs installed in no time at all and since I had the rear end apart, I decided to add the leveling blocks at the same time, to keep the truck from squatting with the gear I haul around with me.
The guys at etrailer are great. And while I did not call them to discuss this item, they have been very helpful in the past with all my questions.
Below are pictures of before, a couple comparisons and after. Sorry if they come out sideways.
These Sumo Springs were a great addition to my Tacoma and well worth the money, IMHO.
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.
Towed my 12k fifth wheel with my '23 super duty once before purchasing these. Night and day difference! The springs reduced the side to side sway and wallowy ride. My initial tow it felt more like a bumper pull than fifth wheel, now back to feeling very stable. The truck still squats pretty good but not as much.
I used the Sumo spring with the RAS system. I remove the pump stops and installed the sumo(without spacer) so the axle would be one inch from sumo so the RAS does the work when not pulling trailer and sumo sumos are activated with pulling the camper. The stability it created on highway and back winding roads was really great. Feels like a totally different truck when loaded up. The RAS came with an offset spacer to move the bump stop in a better place but I didn’t need it because the bracket with the sumo springs moved the unit back and in and had plenty of clearance for the RAC system. In total they only took15 minutes each side to install once the truck was up and the tires were off. The sumo spring and RAS together were amazing and would recommend them to anyone with an F150 that need a little more support near the bumper.
The parts are made with what appears to be a powder coat paint job.They all came packaged nicely and well protected. The instructions are clear, accurate and easy to follow. Mentioning that there is a left and a right assembly may be helpful to some. Mentioning "outboard" may be ovelooked by some. They installed easily. Removing the wheel gives you plenty of room for easy access. Once installed with my 4runner on the ground, the SumoSprings were resting on the frame. I do have a dog kennel and lots of training equipment that is loaded constantly. Hopefully these will help when I pull my RV. I did take it for a drive and it felt "firmer" more stable around sharp curves. I like them.
This is the second pair if SumoSprings I have bought. The first pair of springs were Great coming my truck level with support trailering a 26 ft RV. My first truck was totaled last October by a bad driver.
I just bought enough pair SumoSpring in another truck to haul and support a big weight.
Thanks,
Bruce Forejt
Installation was relatively easy and straightforward. I haven't noticed a huge difference in ride quality yet but I haven't towed anything since installing them. I will edit my review as soon as I am able to put the sumo springs under a heavier load or find the time to get off road.
I love my Ram, but I would white knuckle it while towing my travel trailer which is 3000 lbs. under my towing capacity. Well, I was skeptical that a $300 part could make a difference in the handling of my truck. But this has made a whole world of difference. No porpoising, minimal sway and NO white knuckles. And when I’m not towing, I don’t even know the springs are there. I highly recommend these helper springs!
I waited until I could drive the MH to rate this purchase. They were super easy to install. This difference was subtle but noticeable. Less body roll in corners and in windy conditions. This also resulted in better steering and a more relaxed drive. Well worth it!
Together as a set of front and rear sumo springs and the Hellwig anti-swaybar the ride in my Leisure Travel van is like night and day, improvement and handling!
I had installed this model SumoSpring on my 2019 4Runner and had great results when towing the camper I had at the time. They greatly reduce the bounce when going over dips in the road at highway speeds. Now I have a 2021 Titan and a bigger heavier camper. I expect the same great results on the Titan. Installation was pretty straight forward and took about a half hour. The size difference between the OEM bump stops and the SumoSprings alone should give a better ride when towing my camper.
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 work great for my 2014 Chevrolet Silverado 1500. I pull a 7,000 pound 30 foot Sportsmen RV with a bumper-hitch (heavy tounge-weight). I thought about replacing the leaf springs (way to expensive and difficult to install), but these work great! Under normal load, they are about a half-inch from the top of the axle, so they don't really affect the normal day to day suspension travel (allowing for the shocks and leaf springs to provide the support). My leaf springs are saggy, so it doesn't take a lot of weight to contact the Sumo's. (Also, I have Monroe load-level-load-assist nitrogen charged shocks...Which I highly recommend If you don't haul much weight or don't trailer, the Monroe's are good (awesome)enough without the Sumos). When the trailer rocks up and down after a bump, the Sumo's don't 'thud' when they contact the top of the axle. Smooth, and they reduce the body-roll (when under load) because they remain in constant contact with the top of the axle. Just unscrew the old bump-stops (with a bit of effort) and screw these right in. I would highly recommend! Make sure you get the blue ones identified for the 1500. not as stiff as the ones for the 2500, 3500. Do it!
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.
With the Blue Sumo springs installed, our ProMaster City sits a full inch taller in the rear when cargo area is empty. One important note: When removing the OEM bumper stops, for the ProMaster City the instructions that come with the Sumo Springs are not accurate. You can easily removed the mounting bolt holding the bumper stops in place by using a ratchet with an extension versus having to chisel around the rim to twist it off. Because of its height, the Sumo spring is always in contact with the frame, so there is noticeably less bounce, but a firmer ride with a little more road noise resonating through the ride.
These spring helpers work a treat. Not too hard to install, I did it in my driveway in less than an hour. Be careful to get a jack and jack stands capable of holding up the weight as it is much easier with the vehicle off the ground. When combined with the rear axle Sumo units, they vastly decrease body roll and pitching. Well worth the cost
Wow! Skeptical to say the least. Researched and You Tubed for weeks before I spent the money. Didn’t think something so simple could help so much, but it did! Huge difference in overall quality of ride in my Entegra Qwest class c motorhome. Spend the money. You won’t be disappointed.
Went on well. Not sure if supposed to be a gap between them and the leaf spring. Various groups have used these with the Canyon / Colorado and they too had no gap. Ride seems okay but can tell with hard bumps that rear end is more firm. Haven't towed anything yet, so I can speak to helping with that. But so far seems okay.
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 !
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!
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