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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:
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 (2448 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.Still working on my 2017 Express Van pulling a 5700 lb Winnabago TT
The rear sumo spring was installed into my 2018 Roadtrek 190 Popularity with no difficulty. The front spring was a bit harder due to clearance issue but with persuation of a little grease, the job done withing 3 hours. Riding experience is great. Going through bump has only one reactive bounce each time. Feels like the wheels are constantly sticking to the ground. I have to get use to this feeling from now on.
Great service and nice to talk to. Super fast delivery.I have not installed them yet. Looks like a great product and easy install. The price is in line. I would do business again. Thank you!
Shawnee confirmed that these would soften the rough riding of my Class C. Also told me that it would help reduce sway. Both true. I already had a string stabilizer bar in the rear end. This removed even more sway. Good job eTrailer.
Made a difference in the RV ride.
They are very helpful when you have a heavy load
I installed these 1 year ago (9/2017) on the rear axle of my 30' Class C RV and immediately noticed an improvement. The ride was better overall, the side-to-side sway was markedly reduced, and even the handling seemed better. Installation was really easy; I didn't even have to jack up the vehicle to remove the old bump stops and the Sumosprings mounted in with minimal effort. It was a quick and easy installation that resulted in improved suspension performance instantly. I've since changed the shocks on all 4 wheels and the combination of Sumosprings plus the new shocks have really improved the suspension performance at all speeds and road conditions. There's no doubt to me that the Sumosprings are providing support against side winds, big trucks passing, and even assisting the shocks on poor roads. Best of all, my wife rarely complains about the ride, feeling like she's falling over on turns, or expansion joints in the highway. They aren't cheap, but compared to all the alternatives I looked at, they're worth the money! Highly recommend them.
Work great thank you
Great products
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
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Walter L.
11/17/2021
After a year. Still working very good on my suspension