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SumoSprings Solo Custom Helper Springs - Rear Axle

SumoSprings Solo Custom Helper Springs - Rear Axle

Item # SSR-290-54
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SSR-290-54 - Jounce-Style Springs SuperSprings Rear Axle Suspension Enhancement
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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. Lowest Prices for the best vehicle suspension from SuperSprings. SumoSprings Solo Custom Helper Springs - Rear Axle part number SSR-290-54 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (335)
  • Q & A (3)
  • Videos (1)
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  • Why etrailer?

SuperSprings Vehicle Suspension - SSR-290-54

  • SuperSprings
  • Jounce-Style Springs
  • Standard Duty
  • Rear Axle Suspension Enhancement

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:

  • Helper springs upgrade your vehicle's rear suspension for improved driver control and comfort
    • Support heavy rear loads to keep your vehicle level
    • Help to absorb bumps and shocks
    • Minimize sway
  • Progressive load control - springs compress according to the weight of your cargo
    • Lighter loads - springs compress easily at first for soft engagement and a less bumpy ride
    • Heavier loads - springs compress by as much as 80 percent for support
  • Springs work independently from each other to compensate for off-center loads and reduce body roll during sharp turns
  • Durable, high-density microcellular urethane
    • Works in temperatures from -25 F to 200 F
    • Resists damage caused by oils, road salts, and UV rays
  • Minimal lateral expansion - springs compress vertically instead of to the sides so they aren't easily damaged when operating in tight spaces
  • Maintenance-free - no tubing to run or air pressure to monitor like with air springs
  • Simple, no-drill installation
  • 2 Jounce-style springs included
  • Made in the USA


Specs:

  • Weight capacity (at 50-percent compression): 2,800 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • 2-Year limited warranty


Rear Suspension Support

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.


Installed spring when it is not compressed

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.


Installed spring when it is compressed

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.


Durable, Custom-Fit Springs

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.



SSR-290-54 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit

Replaces SSR-290



SSR-290-54 Installation InstructionsInstallation Details SSR-290-54 Installation instructions

This Product Fits The Following Vehicles

2002 - 2005 Airstream Land Yacht Motorhome 26

2004 - 2004 Damon Daybreak Motorhome 2750LE - Workhorse

2004 - 2004 Damon Daybreak Motorhome 2960 - Workhorse

2005 - 2005 Damon Daybreak Motorhome 2960LE - Workhorse

2004 - 2005 Damon Daybreak Motorhome 2965 - Workhorse

2000 - 2005 Airstream Land Yacht Motorhome 30

2004 - 2005 Airstream Land Yacht Motorhome 30 (w/ Slide)

2005 - 2005 Damon Daybreak Motorhome 3060 - Workhorse

2005 - 2005 Damon Daybreak Motorhome 3062 - Workhorse

2000 - 2005 Airstream Land Yacht Motorhome 33

1993 - 1997 Chevrolet P Series P32

1998 - 2004 Workhorse P Series P32




Video of SumoSprings Solo Custom Helper Springs - Rear Axle

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for SumoSprings Solo Custom Helper Springs Review

Speaker 1: Today, we'll be taking a look at the SumoSprings Solo Line of Custom Helper Springs for the rear axle. You'll want to use eTrailer's fit guide to determine the correct kit for your vehicle. This is what our SumoSprings look like when installed. Yours may look a little different depending on your vehicle.They're gonna replace our factory jounce stops and sit right between our frame and our rear axle. So whenever we're carrying a heavy load, they're gonna give us that extra support that we need. The way our SumoSprings are gonna work is when our suspension starts to sag from the heavy load, these are gonna absorb a lot of that weight.They are gonna work independently from each other so it's gonna help with those off-center loads.

Our springs are gonna have a progressive rate to 'em. So if we have a light load, they're gonna compress softly, still giving us that comfortable ride. But the heavier load we put on 'em, the more they're gonna compress and the more firmness they're gonna have to them.Now comparing to our factory jounce stop, you can see there's a big difference in height. These are gonna give us a lot more compression, whereas our factory jounce stops are really just preventing the axle from hitting the frame.We have a water tank at the bed of our truck as a heavy load or to simulate the tongue weight of a heavy trailer or a fifth wheel. So as I take the truck through my test course, I can definitely tell that there's a load back there.

The engine doesn't seem to be strained that much, but the bumps are extremely harsh and I can definitely feel it resonating through the seat.When I come to the slalom course and I'm going through the turns, it definitely has a lot of body roll and I just generally feel like I need to slow down because it feels likes it's leaning a lot and it's not responding quickly enough to the turns.Now that we have our SumoSprings installed and I have the same load back there, when I'm driving through our course, I can immediately tell a difference. It's much of a smoother ride. Going over the bumps really doesn't feel like anything's back there and it's just a lot more comfortable.When I come into the slalom course, it definitely feels a lot more stable and it doesn't seem to sway as much side to side and it just generally feels like it wants to go faster.These are made of a durable micro cellular urethane that works in temperatures from -25 degrees to 200 degrees Fahrenheit, and resists damage caused by oils, road salts and UV rays. Compared to air bags, these are maintenance free option with no tubes to run or air pressure to maintain. Both will help level your load and provide a smoother ride.

Airbags can be adjusted to suit your needs whereas the SumoSprings are a fixed option.That completes our look at the SumoSprings Solo Line of Custom Helper Springs for the rear axle.


Customer Reviews

SumoSprings Solo Custom Helper Springs - Rear Axle - SSR-290-54

Average Customer Rating:  4.7 out of 5 stars   (335 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.

- SSR-290-54
by:

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. 151532



- SSR-290-54
by:

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. 101145



- SSR-290-54
by:

Arrived as promised,extremely well built product,well give a full reveiw when I use the motorhome again. 97153


Comments
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.
John H - 08/29/2014

6546

- SSR-610-40
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Fantastic. has no impact on ride with no weight in truck. I installed them on my Toyota Tundra 2007 following a frame replacement. they sit about 1-2 inches off so they do not engage until loaded. significant difference with any load over 500 lbs. easy to install. 722454



- SSR-329-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Graeme product easy to install 717170



- SSF-106-40
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


These were perfect for our E450 Dynamax Class C motorhome. They really enhanced the ride and handling. I would definitely purchase again. 718740



- SSR-114-54
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Installed when factory bushings deteriorated. I had noticed a slight sway when towing 9000 lb travel trailer during cross winds. Once installed, sway was gone. I will either take these off when I replace truck or purchase new ones. 582583


Comments
Sold truck, got a 2019 ram 1500. First thing I did was replaced stock bushing.
Tom - 11/14/2019

63337

- SSF-106-40
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Super fast shipping and delivery. Had them installed this morning and we're enjoying a better ride with less sway in cornering and curb transitioning. Installed on a Sprinter chassis, B+ touring van. 668030



- SSR-117-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


I installed these on a 2017 Ford F-150 SuperCab to stop the initial rear-end sag common with towing a trailer. These pickup trucks have springs regulated for a very smooth ride WHILE EMPTY, as most PU's are used as a personal sports car. The SSR product removes the rear sag, without causing a harsh ride. Easy to install... no maintenance needed... no air-bags to constantly leak. I had already installed Hellwig after-market sway bars on the rear, and also replace the puny Ford OEM front sway bar with a Hellwig product. Together with the Sumo product, there is NO side-sway at all. This product provides extra support, without detriment to the ride comfort. 682449



- SSR-207-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Sumo springs really helps on heavy load situations & helps the ride as well. Easy to install, does everything the company said & what I expected it to do. Etrailer ,their staff with their expertise & knowledge of the products as well as with tutorials , pictures & videos makes me come back to purchase products that they distribute. 698298



- SSR-210-40
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


These have been exactly what we needed. The rear suspension on our new Xterra was a little looser than we liked for towing our camper. Over larger bumps we were bottoming out. The Sumos have the Xterra right where we need it to be. 287494



- SSR-338-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


08 Winnebago View on an 07 Sprinter chassis. To reduce the side-to-side rocking that is inherent in this tall, narrow, heavy vehicle, I decided to try the Sumo SSR-335-47's on the rear bumpstops. Using the vehicle bottle jack, I raised the rear tires almost off the ground, one side at at time, to provide enough room to fit the Sumos into place. The old bumpstops simply pop out with force from a couple of screwdrivers, and the Sumos simply slide into the existing brackets. The fit is precise and snug. I put soapy water on the brackets and applied a bit of force to wedge the Sumos into place. It's that simple. The difference is pronounced, with significantly less rocking over minor road undulations. I'm impressed with this product, and wish I'd done this simple modification long ago. 156528



- SSR-116-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Product works perfect, just like advertised, simple installation took 35 minutes both sides bolt in. I tow a 24’ enclosed car trailer with a car & golf cart inside. Very little sag, beats the trouble of air shocks, or installing air bags. All your products are very helpful To the do it yourself mechanic. Thanks again for a great product. PS no one paid me to say this. 643878



- SSF-106-40
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


I have a 3500 Sprinter RV. Had the SumoSprings installed front and back for $135 at an independent RV service center that also handles RV's. They had never installed them before. I gave them the installation instructions and some advice I learned from some online videos. Sprinter is unloaded at present but notice it handles better going around turns and curves in that it doesn't lean as much and feels very stable. Need to take on a trip to see how it handles when loaded. I noticed a sort of squeakiness I am not sure was there before. I need to drive it more to determine it is from the SumoSprings. 544198



- SSR-612-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


I installed the helpers on my Tacoma to help with the load of a car trailer hauling our old pick-up to car shows. They also help to keep the truck level when hauling loads of fire wood. The only issue that I have is that when empty, it gives the truck a stiffer ride. Thank you Etrailer for your quick service and follow-up on your products. 664732



- SSR-307-40
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Had these on for a week now. No spacers and about 3/4” clearance. Nice thing I like is the ride height stays the same with no change to the regular ride quality. Only notice it’s stiffer on a big highway bump but not obtrusive. I would not go with heavier ones on a 1/2 ton truck. I won’t really get to test them until summer when I tow a 8000# boat. In the past with the boat on the hitch the truck sagged and was too springy. These I am sure are going to fix the sag and the springy issues. 638307



- SSR-114-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Great product, definitely gets my truck leveled out with our 5th wheel trailer! Easy to install, would highly recommend Sumo Springs. 132624


Comments
I would highly recommend etrailer, there customer service unsurpassed, great products, great company!
Mark S - 05/27/2015

12070

- SSF-106-40
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Product was easy to install, I did not have to remove wheels. One note, the instructions claim the nut for the OEM bump stop and the Sumo replacement is 10MM, it is actually 13MM. Because to installation stud is buried in the suspension member, have a magnet handy and a deep 13MM socket. I used a piece of masking tape to keep the nut in the socket while engaging onto hidden stud. First impressions are favourable as I installed this in conjunction with rear Sumo Springs. Noticeable improvement in sway and stability. Low cost high value modification to my Mercedes Spring RV. 513504



- SSF-202-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


I bought the sumo springs for the front of my 16 2500hd Duramax. The install was really simple Chanel lock pliers twist and pull old ones out and a little glass cleaner and a small pry bar pushed new ones right in. Went with the sumo springs over the timbrens cause I didn’t want the truck sitting on the stops and the sumo springs still have about 1 inch before they touch control arm so normal ride isn’t affected only have the added support when I install my V plow Very satisfied with etrailer and the sumo springs thank you 611056



- SSR-610-54
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Put these in my 2007 Tundra. I could tell a great difference just rounding corners with stability with out a trailer on. I like my trucks to ride like trucks and this for sure helped with that. Also when I hooked up my enclosed car trailer loaded there was a huge difference in the amount of squat it had versus before I put them on. 597026



- SSR-610-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


They work great and simple hand tool install at home. 301052



- SSR-610-54
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


I've had these for 1 year now for my 2016 Tundra and they are exactly what I needed!!! I couldn't be happier! Prior to purchasing and installing these, when I towed my 2 horses with my 2 horse slant bumper pull trailer, I was concerned about cargo weight in the bed of my truck so I was limited to gear I could bring camping and hunting season with my truck. Since adding these I can pull the horses and load my truck bed to the max including horse feed, hunting gear, coolers with food you name it and my truck doesn't even squat a bit! The ride is great with a load or without and my performance off road is still fine too! These proved to be a great solution to my needs and frankly better than pricey air bags. 673850


Comments
Were glad to hear that youre pleased with your purchase. Please keep in mind that the Sumo Springs product will not increase the capacity of your rear truck axle. The tongue weight of the trailer plus the weight of the cargo carried should not exceed the trucks rear axle capacity.
-- Mike L - 07/24/2019

58178

- SSF-106-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Installed these on a 2017 Mercedes 2500 Sprinter/2018 Roadtrek SS Agile. I already have these on the rear where they work great reducing sway and bounce, wanted the same handling in the front.. I found it much easier to remove the wheel to access the nut holding the bump stop in place and to place the Sumo Spring in position. Overall an easy install. 658576



- SSF-106-47
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


Can’t eat Etrailer products and service 559621



- SSR-186-54
by:

Review from a similar SuperSprings SumoSprings Solo in Vehicle Suspension


2011, F53, 22,000 lbs chassis. After having adjusted tire pressure, installing new shocks and a rear trac bar, these are the icing on the cake. I installed the front Sumo’s and was so impressed I immediately purchased the rears. The side-to-side sway is almost completely gone, my motorhome tracks so much better now, and it actually soaks up a lot more of the little bumps. I’m really happy with the Sumo Springs and Etrailer. 225878


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Info for this part was:

Edited by:
Leah B
Expert Research:
Mike L
Video by:
Andrew K
Written by:
Mary E
Updated by:
Sarah W
Installed by:
Robert C

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