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2,800-lb Capacity. Upgrade your Workhorse P Series'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 Workhorse P Series'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 Workhorse P Series 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 Workhorse P Series. 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 Workhorse P Series, and they install easily - no drilling required.
Average Customer Rating: 4.7 out of 5 stars (2289 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.Good quality, clear instructions and fast shipping
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!
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.
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.
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’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.
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 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 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 !
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.
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.
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!
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.
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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.