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SumoSprings Solo Custom Helper Springs - Front Axle

SumoSprings Solo Custom Helper Springs - Front Axle

Item # SSF-111-40
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1,000-lb Capacity. Upgrade your vehicle's front 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 - Front Axle part number SSF-111-40 can be ordered online at or call 800-298-1624 for expert service.
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SuperSprings Intl Vehicle Suspension - SSF-111-40

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

1,000-lb Capacity. Upgrade your vehicle's front 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.


  • Helper springs upgrade your vehicle's front suspension for improved driver control and comfort
    • Support heavy front-end 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 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


  • 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

Front Suspension Support

A heavy front load can cause front-end sag as your factory suspension compresses under the weight of the load. This means that the front 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 rear axle, your rear 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 front 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 rear 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.

SSF-111-40 SuperSprings Sumo Springs Solo Front Vehicle Suspension Kit

Replaces SuperSprings SSF-104-40

Installation Details SSF-111-40 Installation instructions

This Product Fits The Following Vehicles

Video of SumoSprings Solo Custom Helper Springs - Front 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 - Front Axle - SSF-111-40

Average Customer Rating:  4.7 out of 5 stars   (1213 Customer Reviews)

1,000-lb Capacity. Upgrade your vehicle's front 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.

- SSF-111-40

No moving parts. It is just there and appears to be working well. I really cannot tell any difference. Perhaps, I am not pushing the envelope, but maybe that is the point (the envelope has greater limits now). No issues and I guess, piece of mind?

- SSR-610-54

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.

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

- SSR-610-40

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.

- SSF-280-47

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.

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

- SSR-612-47

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.

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

- SSR-612-40

Review from a similar SumoSprings Solo in Vehicle Suspension

I have an ARE Overland camper shell on my 2019 Toyota Tacoma. Installed these to help with the over all ride especially over hard bumps. Sounded like I was hitting the bump stops hard. Installed and ride did improve for the back. Also less body roll. P.s. George J is the best! Always on it when it comes to getting parts out!.

- SSR-114-54

Review from a similar SumoSprings Solo in Vehicle Suspension

Not driven under load, but think it is the answer. I may have to remove the spacer. I had to have them installed, not as easy /smooth as their video portrays. The instructions do not advise as what it suppose to look like (for F350 SRW) . IE: barely touching the axel? Above the axle? The 2800 load was recommended, I will follow up after my RV trip. I want it to set level, but not ride stiff W/O a load.

You are going to want at least 1 inch of space between the bottom of the spring and the axle otherwise it will create a rough ride. I do recommend removing the spacer.
-- Etrailer Expert Sierra K - 09/30/2021

- SSR-127-54

Review from a similar SumoSprings Solo in Vehicle Suspension

Super easy to install, and is a perfect fitting, direct replacement of OEM hardware. Half an hour, and done. Don’t forget to torque fasteners properly, and use Type-E torque seal/mark, to do it like a pro.

Way better ride and control over the airbags with on board compressor. F250, Lance 825 For my application, yellow Sumo Springs are a superior product. And 110 the cost!
Paul - 12/23/2021

- SSF-106-47

Review from a similar SumoSprings Solo in Vehicle Suspension

We love our Sumos. They are easy to install and they helped with our sway and jouncing. Unfortunately, we just added a new rear suspension package which lifted the rear about 2 inches. Now the Sumos don’t touch the axle and won’t provide much sway damping. They act now more like a very fancy jounce bumper. Still good to know that the rear Sumos will give us extra protection should we hit a wicked pothole. Front sumos still snug against the axle and helping with sway and crosswinds

- SS65FR

Review from a similar SumoSprings Solo in Vehicle Suspension

Work great!!!! Super easy install. Took me 20 minutes to install both springs. They reduced the sag on my Silverado by a little over an inch when hooked up to our RV.

- SS95MR

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.

- SSR-209-40
by: 05/25/2021

Review from a similar SumoSprings Solo in Vehicle Suspension

2018 silverado z71 crew cab 6'6 bed Replaced air bags with 1000# sumo springs. Do a lot of offroading and bags limited travel. With these I can use my suspension and stay level on the trip with all my gear. Nicer ride unloaded and even sweeter when loaded. Easy 40 min install if you're use to working on your own stuff. A definite upgrade.

- SSR-610-47

Review from a similar SumoSprings Solo in Vehicle Suspension

The springs do work fine on my 2013 tacoma , really help prevent sway when pulling my 15ft travel trailer . needed to cut some foam off the top to get some clearance for the shocks to work .

After a year or so the sumos are working fine under all of the trailers and loads I have been able to haul or pull
Steve - 01/11/2022

- SSR-130-54

Review from a similar SumoSprings Solo in Vehicle Suspension

I found these springs while researching a towing question. I was more than impressed with portrayal of part, adequate info and glowing reviews. I was further delighted by speed of arrival and impressed with branding of the packaging. Top notch. Front and back installed in about an hour. Instructions are clear. I did find it easier to pre-assemble the stop to the bracket in order to determine if I was going to use the spacer or not. (I did). Note on this RV chassis, the bracket mount stud had to also clear an additional harness bracket. There was adequate threads for locknut

- SSR-610-47

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.

- SSR-311-40

Review from a similar SumoSprings Solo in Vehicle Suspension

They look great on My 2019 Ram ProMaster City Raised her up full 2 inches Fast Shipping easy install for my mechanic Thank you so much

- SSR-612-47

Review from a similar SumoSprings Solo in Vehicle Suspension

Installed easily on my '16 Frontier 2wd, came with great directions! Noticeable reduction in body roll while cornering and less squishy feeling from rear suspension with load. Thanks to CSR Ashley for her help!

- SS68RR

Review from a similar SumoSprings Solo in Vehicle Suspension

Do you need to put a reference between your part number and the manufactures part number that you are getting the right part all the pictures are in black-and-white on the website the parts are blue in this case but nothing to tell you that you have the right part had to call and check out the numbers

- SSR-209-40

Review from a similar SumoSprings Solo in Vehicle Suspension

Added these to my 2001 Chevy Silverado 1500 (regular bed, regular cab) after noticing the original bump stops were missing. I use my truck frequently for hauling, and occasionally for towing. Pros -- really tightened-up the suspension. When towing and when the truck is loaded, it performs much better. I don't doubt these have increased the amount the truck can safely carry and tow. The truck even seems to corner better. Cons -- These really tightened-up the suspension. When driving unloaded, the truck rattles you more than it used to. Though they are called "helper" springs, they are basically constantly helping, even if you are unloaded. Ultimately, it's a trade-off, and if you use your truck for its intended purpose, then it's a good trade. But if you primarily want comfort driving an empty vehicle on the interstate, then this upgrade is not for you.

- SSR-307-47

Review from a similar SumoSprings Solo in Vehicle Suspension

took about 45 mins to a hour to install mostly because of bolt up other wise probably 30 min install if bolt up was not in such a tight location. I did leave out the spacers which left me with about a 1 inch gap where as I had about 3 before install with OEM bump stops. I have not loaded a trailer on my truck yet but I did load around a 1000lb bail of hay right after install into the bed and you could not really see a drop in the back. Moment of truth will be when I load my travel travel which is the main reason I bought these due to sag. 2014 Ram 1500 4x4

- SSR-307-47

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.

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

- SSR-313-54

Review from a similar SumoSprings Solo in Vehicle Suspension

The Sumosprings solved the bad wind swaying problem in my 2016 Roadtrek Simplicity RV built on a Ram Promaster 3500 high roof chassis. Before it was white knuckle driving, now it drives like a sedan. My local RV dealer installed them for a one hour labor charge. The improvement is amazing! Right before going bankrupt, Roadtrek began putting SumoSprings on their special "National Parks" vehicle - they are a necessary addition!

still handles very well. A very necessary upgrade!
Keith M - 12/22/2021

- SSF-106-47

Review from a similar SumoSprings Solo in Vehicle Suspension

Love the product fairly easy to install. Took just about two hours for all four Sumosprings. The front was a bit more challenging and I’ve seen somewhere else about using a plastic bag that you can cut up and inserted in the 13 mm deep socket, this will keep the nut in place while threading. Your videos are very helpful and strongly suggest that you create a how too for the front replacement

Love them. Highly recommend both front and rear. Easy to install
Thomas - 10/15/2020

- SS95MR

Review from a similar SumoSprings Solo in Vehicle Suspension

The installation was a bit slower as this was a 2002 GMC Sierra 1500 and the bump stop did not have the bolt in the hollow opening. Instead, the bump stop and cup came off by removing a nut between the bracket and frame. Access to that bolt is more difficult but doable with an open end wrench. Then use the provided spacer and in my case one washer, and the provided nut and bolt to secure the spacer. The Sumo spring then simply screws on. Both fit very well leaving a gap between the spring and Axle. This installation was on a quadrasteer Denali. Very pleased with etrailer's written instructions (although a video for this vintage truck would have been great) and their delivery time.

- SSR-114-54

Review from a similar SumoSprings Solo in Vehicle Suspension

So managing a travel nurse's life we tow all over the country.. The Sumo spring has helped tremendously with ride level and stability for tens of thousands of miles in this first year.. With no hassle of leaky air hoses or blown bags along your ride it is by far one of the easiest ways to help support your load!!!!

Show More Reviews

Ask the Experts about this SuperSprings Intl Vehicle Suspension

  • Front Suspension Enhancements for a Lifted 2015 Ford F-250
    I do have an option for you but the SumoSprings Solo Custom Helper Springs part # SSF-111-40 will not work as is if the contact point has changed as a result from the lift kit on your 2015 Ford F-250. The best options for you so long as you have the factory coil springs are with the Firestone Coil-Rite Air Helper Springs part # F4160 for 4x4 and part # F4101 for 4x2 or the Coil SumoSprings Custom Helper Springs part # CSS-1094F for 4x2. If you no longer have the factory coil springs...
    view full answer...
  • Recommended SumoSpring Fit for Motorhome on 2021 Ford F-550 Chassis
    The # SSF-111-40 SumoSpring Solo you'd looked at would be a great choice for the front suspension of your motorhome that's on a 2021 Ford F-550 chassis, and would offer 1000 lbs of support. For the rear suspension, you'll want to use the # SS54VR which offers 2800 lbs of additional support. In addition to extra support, the SumoSpring Solo helps keep the vehicle level, and minimizes sway.
    view full answer...
  • Will SumoSprings Lift the Front End of a 2017 Ford F-350
    Because the SumoSprings # SSF-111-54 will always be engaged on your 2017 Ford F-350 the stock suspension will not compress as much as it normally would. This will give you the feeling that there is lift though it isn't actually lifting anything it is just preventing the normal amount of stock suspension compression. You could go with a softer spring set, # SSF-111-40, which would allow the stock suspension to compress more than the heavier duty SumoSprings.
    view full answer...
  • What Complete Air Bags Can I Control from the Cab of My 2021 Ford F-350 Super Duty with In-Bed Hitch
    Since you are transporting a fifth-wheel trailer, I assume you are looking for rear-axle air bags. We only carry Firestone-brand Ride Rite air bags that will work with 4-wheel drive models of 2021 Ford F-350 Super Duties. That is the Firestone Ride-Rite Air Helper Springs - Double Convoluted - Rear Axle # F88ZR. Apart from the 5000-pound load-leveling weight capacity, the springs help prevent sagging while towing. They are also 100% made in the U.S.A. As far as compatibility, these air...
    view full answer...

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Info for this part was:

Employee Leah B
Edited by:
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Expert Research:
Mike L
Employee Cole B
Installed by:
Cole B
Employee Mary E
Written by:
Mary E
Employee Wilson B
Updated by:
Wilson B
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