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  1. Vehicle Suspension
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SumoSprings Solo Custom Helper Springs - Rear Axle

SumoSprings Solo Custom Helper Springs - Rear Axle

Item # SSR-122-40
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Our Price: $369.99
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1,000-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 Intl. SumoSprings Solo Custom Helper Springs - Rear Axle part number SSR-122-40 can be ordered online at etrailer.com or call 1-636-306-4830 for expert service.
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SuperSprings Intl Vehicle Suspension - SSR-122-40

  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • SuperSprings Intl
  • Light Duty

1,000-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
    • Keep your vehicle level when you're towing or hauling a heavy load
    • 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 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): 1,000 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee


Rear Suspension Support

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.


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-122-40 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Vans

Installation Details SSR-122-40 Installation instructions

This Product Fits The Following Vehicles




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-122-40

Average Customer Rating:  4.7 out of 5 stars   (1579 Customer Reviews)

1,000-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.

by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Very straight forward installation. Simple. very noticeable difference under load. Towing with the gooseneck also an improvement, looking forward to the longer road trip test. So far pleased with the product and results


Comments
after a year i could buy them again. great performance and no issues.
Richard J - 06/04/2022
My wife and I loved him on our trucks
-- comment by: Ben L - 07/26/2022


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I would have give it a 5star but the bolts are 1/4” I think it should be at least minimum of 3/8” or1/2” bolts to hold the sumo springs. I like them toed the camper handles very well. Wishi got these a long time ago worth getting. With out camper can tell that it’s there but rides ok. I wanted the same ride it not quite. I ask what the how high they are said 5” with bracket but it’s actually 6” with bracket see picture. I would recommend getting the sumo springs ssr-610-47.


Comments
They are working great in my 12 tundra still would recommend them. I tow 8000lbs camper handles great at times I probably wished I got the next step up but might be to hard when not towing. Will see next time I need to get some for next truck. Wish they have measurements to know how high they are from the lighter ones to the heavier ones.
Luc - 04/18/2022


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I had Sumo helper springs installed on my Winnebago Sprinter RV both front and back. It made an amazing difference! It no longer felt like riding in a Conestoga wagon…swaying side to side and bouncing everything to the floor. The ride is now smooth. Driving was easier. Turns are suddenly level instead of feeling like I might turn over. I could not be happier with these products! And it only took 20 minutes to install all four!




by: 01/31/2021

Review from a similar SumoSprings Solo in Vehicle Suspension


2015 Frontier Crew cab Desert Runner (purchased the yellow Sumo Springs). Easiest install ever! 18mm deep socket and long breaker bar for breaking nuts loose. Removed factory bumpstop, install sumo bracket and retighten U bolts to 58 foot pounds. After installing both brackets, lifted back of truck up 4 inches to install sumo spring with blue lock tight on bracket bolt, tighten sumo spring onto bracket and lowered truck off the jack. Overall it raised the back of my truck bed 1 inch. Ride is stiffer with no bed roll in the turns. Loaded my 24 foot travel trailer with load leveler- equalizer bars and gained 3 inches (less “squat”.) Truck is level now vs nose high (without the sumo springs). Definitely an upgrade that was needed in 2015 when I first bought the truck!!!


Comments
Yellow for the super heavy load and daily driving I have the black middle weight springs. Easy swap out when I need the yellow Heavy Duty.
Mike M - 02/01/2022


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I just finished installing the Sumo Springs to my 2020 Ram 3500. The install was super easy. Instruction were easy to follow and the whole thing took less time than I thought. I won’t know how they perform until I pull the 5er out of storage this spring, but I am ready. My only question and the reason for 4 stars instead of 5 was I thought they would sit closer to the axle than they did, may 2” from axle and I would have liked may 1” maybe I could have used another spacer and longer flat head screw to bring it closer but we will see when I put the weight on the truck. I included picks if someone wants to give me their opinion. So far I am really happy with them.


Comments
Fantastic, the Sumo’s are working as promised. Helps with sag, smooths out the ride and provides support from sway. I couldn’t be more happy. This year we will be adding Sumo’s to the 5er to help in the back, super excited about this upgrade.
Brian - 01/31/2022


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Made towing TT with my Toyota Tundra much better. My camper has a tongue weight over 900 pounds. Made bridge crossing and overpasses much smoother.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


As advertised very easy to install these Sumo Springs on my 21GMC 1500. I only installed the plate not the 1” spacer. I tow an RV and expect the ride to be more balanced and able to carry more “stuff”. Ride after install is still smooth but on larger bumps I can notice stiffness. Very satisfied right now




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


We pull an off-road teardrop camper with our 2013 Toyota Tacoma and were looking for a little help with the rear end sag when we have that hitched plus putting some weight in the back of the truck (firewood, water, etc). Our Tacoma is lifted (2.5") but the lift kept the stock springs with an added Deaver leaf to help with the notoriously soft Toyota springs. However, with the shell and ~300 pounds of weight in the back, it still sagged, especially with another 250 lbs of tongue weight from the trailer. The Sumos have eliminated that sag, even with bigger loads in the bed, eliminated body roll (also notoriously bad with Tacomas) and didn't destroy the ride for day to day driving. There might be a slight bit more stiffness when hitting speed bumps, but definitely not bad at all. If anything, I would say it IMPROVED the ride and handling.

The springs themselves were simple to install, less than half an hour start to finish. Some reviews have said they were bumping the frame after installing but we had about 1/2" gap on both sides. The only "specialty" tool would be a torque wrench capable of 90 lbs to get it to spec.

We considered Firestone air bags but after talking with the reps at e-trailer, we decided on these and couldn't be happier. Reasonably priced (half the price of air bags), no maintenance, great customer service...can't argue with anything at all.


Comments
One year and working better than I imagined it would. Carrying loads in my Tacoma is no longer an exercise in fear and my shocks are way happier happier with a little help!
Barry - 08/07/2021


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Easy to install. One easy hour and did not take tires off.

2013 Tacoma Pre-Runner


Comments
They do their job and loving it. Im able to put max load 1650 lbs on my Tacoma and there is very little sag. Only a small complaint that has to do with the ride when unloaded. I had lay with the adjustable stock absorberá for a while finally findings a suitable ride. With the SUMOs having no clearence between the frame and the springs when installed, they cause a bumpy ride unless the shocks react very fast to attenuate it.
John - - 08/30/2022


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Parts arrived on schedule. At first I thought that the parts did not fit my truck, so I called customer service and they immediately started to send me a return label and refund. It turned out that I was wrong, and the parts did fit. I called them back cancelled the refund action.
Great friendly service!
I also found that the price I paid was much cheaper than [online store]. I highly recommend etrailer!


Comments
The springs still work as they should. They are nice because they dont seem to affect the ride quality when the camper is not on the truck. Very happy with my purchase.
David B - 05/31/2022


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


This product is a excellent addition to my 2018 ram 2500 when I hook up my reflection 280rs fifth wheel the truck squats less than a inch with the factory coil rear springs and the ride is smooth and no jerking




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


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!




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I often pull my 3800lb boat with me 2021 Tacoma, I needed some extra help with the bouncing and sway control, these Sumo Springs are the best thing I could have done, it handles like a completely different truck now. 100% satisfied.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Instructions were adequate. installer has to contribute to the outcome with bolt cleaning, match marking axle saddle and finding out "u" bolt torque value.
I think the mount should be radiused where the "u" bolt contacts it as opposed to the square edge. Was unnecessary to jack up truck to get clearance to screw on spring, I put a wood between frame and leaf and raised the box 1/2" with a wedge.
I got the ride height I was looking for, the blue springs are very close to offsetting trailer tounge weight allowing for a bit of takeup with my Andersen hitch.
Barely noticeable change in unloaded rear end stiffness.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Couldn’t have been a simpler install! Total time was less than 15 minutes which included digging the floor jack out, blocking the tires and cleanup. Makes a heck of a difference in keeping the nose of the truck up when towing trailer or hauling 16 golf cart batteries.


Comments
Still awesome. A year later, have hauled up to 16 golf cart batteries with no issues due to the weight. A real help in getting the work done without the fear of bottoming out.
EV T - 08/19/2021


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


2007 Workhorse W22 chassis, easy install, slight KJ knuckle busting on drivers side, but patience works.


Comments
Most Excellent, great ride
Bryan - 12/30/2021


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


When installing the springs I discovered that one of the mounting plates (1 out of 4) had 2 of the holes missed drilled and was unable to install. I had to send back to etrailer.


Comments
Sorry to hear about this defect. I see in your account that the manufacturer has provided you with a new mounting plate.
-- Etrailer Expert Sierra K - 10/18/2021


by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I have always used airbags in the past and this is my 1st time using SumoSprings and I can say I will never go back to airbags! I run a heavy load on a 21’ 4Runner pulling a Teardrop with two motorcycles on stock suspension




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


You can't go wrong with ordering from etrailer. As for the springs, install was truly a breeze. They don't bother your factory ride when empty which is important to me. Haven't hauled anything heavy yet.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I am happy doing bussines with Etrailer, I ordered the wrong Super springs for my Ram Promaster 2500 by mistake, called them up spoke to miss Paula and she was able to find and ship the correct one fot my Vehicle within a couple of days. She even send me a Return lable so I can return the other one back to the company. I look forward to continue doing bussines with this company.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


We installed the SumoSprings SSR-612-40and replace the OEM shocks with the Rancho RS9000 XL on a 2016 Nissan Frontier. When pulling a trailer (KZ Sportsmen Classic 160QB)the back of the truck sag only 1 1/4".I have used Sumosprings in the past and with great results.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Put these on my 05 Nissan Titan, install was very easy took 30 min. To install! Needed these since I pull my Travel Trailer and load my golf cart in the bed of my truck and the squat was terrible. Now there is no squat and a much better ride!




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


This is one of the best upgrades ever. The sumo springs were like adding pillows to the back. Took out the bad body roll and rear shock chatter from the factory junk rancheros. On my Sierra 1500 2017 z71. Easiest install and upgrade spent on this truck.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Senior citizen Installed in 30 mins on a 2022 f250 that hauls a 5th wheel. If I can do it must be an easy install. Use only one 1/2” spacer. Will test out in the coming weeks.




by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Too short. Even with the 1” spacer. Rear leafs compress 2” before the sumos even make contact. Another 1/2” and I’m already squatting. Did nothing to reduce sag. Stock 2020 Chevrolet 1500 WT. 2wd.


Comments
I contacted the manufacturer and showed them your photos. It is very rare, but your truck is taller than most. They will send you a taller spacer.
-- Etrailer Expert Sierra K - 06/24/2022

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Info for this part was:

Employee Leah B
Edited by:
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Employee Andrew K
Video by:
Andrew K
Employee Mary E
Written by:
Mary E
Employee Wilson B
Updated by:
Wilson B
Employee Alex H
Updated by:
Alex H
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