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2,800-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.
Features:
Specs:
A heavy rear load can cause 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 (2464 Customer Reviews)
2,800-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 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!
1 1/2 hours after delivery I had them installed motorhome sits so much better.
Good quality, clear instructions and fast shipping
Picked them at the mail box, 30 minutes later I had them installed. Course I already had the RV jacked up and wheels remove with anticipation of the sumo super springs arriving. Now I hope they work.
Easy install works great
I installed these on my Fleetwood Terra 32' Motorhome. It is built on a Workhorse P32 chasis. All I can say is that the improvement in cornering and sway from wind or trucks passing is unbelievable. These were installed in combination with the Roadmaster return to center steering stabilizer. I highly recommend both for anyone wanting to upgrade their coach to handle like it should have from the factory.They made the coach drive like a large SUV. No more pucker factor.
Great service arrived in 3 days. Installed the Sumo springs last weekend. It was about a 15 minute job on a P32 chassis. I used the supplied spacers and it raised the rear end about 1/2 inch and really reduced the body roll. They replaced the stock rear jounce bumpers which were shot. This is what should have come on the motorhome from the factory.
Arrived as promised,extremely well built product,well give a full reveiw when I use the motorhome again.
John H.
8/29/2014
This is a must have product,was an easy install and has performed flawlessly for the past year.With the quality of this product cannot imagine ever needing to replace them. John H.
These were installed on a GMC dually that is now carrying a 11 foot long camper. They worked perfectly and install was relatively easy.
I did not do a lot of traveling with it this summer but they seemed to help with what I did.
David
11/13/2022
They are working good. I think it helped with reducing the push you get from passing semis. I was not able to do much driving in less than 15 mph or more sidewinds this summ but I think they halped with the lean,
Looked like the product was unpackaged and used.
Katrina B.
10/14/2022
I am sorry that these springs did not show up to your expectations. We do not sell any returned or used items. However, we do have a demonstration team that takes our product and does a temporary installation in order to get videos and pictures of the item in use. It is our policy to make sure that the item is still in good or new condition before it gets put back on the shelf for sale.
I’m happy that I installed these. The rig settles in a turn sooner and does not porpoise through the turns any more. Jounce settles sooner. Didn’t get much improvement in straight line tracking. Overall, the rig is more Moe as ant to drive.
Very easy install. I had sprayed penetrating oil on the old one the day I ordered these, and they came right off.
On my RV they raised the ride height almost an inch at the axle, I would have preferred they were a bit taller.
I have not had a chance to drive it much since installing to comment on that.
Much much smoother ride. Highly recomme nd
GREAT PRODUCT, AND WONDERFUL SERVICE AS ALWAYS.
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.
Very easy installation in about 20 minutes. Very ingenious concept as opposed to bolt on leaf style helper springs
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 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.
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.
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Steven
9/29/2024
Works great. Just drove 11 hours round trip and the motorhome handled very good.