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SumoSprings Solo Custom Helper Springs - Rear Axle

SumoSprings Solo Custom Helper Springs - Rear Axle

Item # SSR-127-54
Our Price: $381.99
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Vehicle Suspension

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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. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Solo Custom Helper Springs - Rear Axle part number SSR-127-54 can be ordered online at or call 1-800-940-8924 for expert service.
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SuperSprings Intl Vehicle Suspension - SSR-127-54

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

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.


  • 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, 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


  • Weight capacity (at 50-percent compression): 2,800 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-127-54 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Installation Details SSR-127-54 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

SumoSprings Solo Custom Helper Springs - Rear Axle - SSR-127-54

Average Customer Rating:  4.7 out of 5 stars   (2227 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.


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.

Etrailer Expert

Jenny N.


It is possible that with a slide in camper this spring is not rated higher enough for you. I recommend for your 2020 Ford 350 4WD taking a look at part # SSR-128-47-2 which has a 5000 lb capacity. As a side note, these springs do have a limited lifetime warranty and I can provide the details to you if you would like.


Sumo Springs work great with camper. Much less body roll, firm but not stiff ride

2015 Ford F-250 Super Duty

Easy installation, however the 2 puck spacers that touch the frame had to be ground down to fit my 2015 F250 frame. The inside portion of the frame has a rounded flange that rolls toward the ground, this is why I had to ground the puck spacers. Otherwise installation was a breeze and they work really well. Definitely reduce sway and sag in my work truck when fully loaded unlike the OE parts. The loaded photo is our truck bed fully loaded with about 2700 lbs in the bed and a trailer attached to the bumper.

2023 Ford F-350 Super Duty

Towed my 12k fifth wheel with my '23 super duty once before purchasing these. Night and day difference! The springs reduced the side to side sway and wallowy ride. My initial tow it felt more like a bumper pull than fifth wheel, now back to feeling very stable. The truck still squats pretty good but not as much.

2023 Ford F-250 Super Duty

Had a 2018 F-350 Platinum with airlift. Pull a 16K 5th wheel. Recently bought a 2023 F-250 Lariat. Read the reviews of these springs. Was skeptical at first. After 4000 miles, I'll never go back to air lift. Started out with just the springs then had to add the extra spacers to get rid of the front end lift. Truck rides smooth without any load. Sway and front lift gone! Great product! Air bags installed were $1600.00, Sumo Springs $370.00 self installed. Easy installation as well.


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!


This is the 3rd vehicle I have installed Sumo Springs and this Specific application did not disappoint. The installation was so simple and they fit perfectly. I purchased these for my 2019 F250 so I did'nt have to worry about sag when towing my fifth wheel and again they worked as designed. My truck would sag around 3 inches in stock form with the fifth wheel hooked up but after installing Sumos the truck dropped 1 1/2 inches. A noticeable difference. I opted to leave a 1/2 inch space from the bottom of the Sumos to the axle as to have a little less engagement. Ordering from etrailer was easy and shipping was fast.


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.

2023 Ford F-350 Super Duty

I have installed the sumo springs on our RV and they worked as expected.
I will install the sumo springs on my truck to help with the ride and partial sag.


great while pulling my camper very stiff when unloaded i probably should have gone with the medium grade. easy to install well made

2019 Volvo Cross Country

Added to my 2019 F-250 to help with load balance, spring sag, ride comfort when hauling or using my truck camper. Was a super easy install(30 min) and made a huge difference right away. I left one of the spacers out so I could maintain a slightly softer ride when unloaded. Just completed a cross country trip with the truck camper and a 7000# trailer. Cold winter time trip with 40mph+ cross winds. Ride was incredible, very stable, and kept sway very much under control. Wasn't sure if the SumoSprings would stiffen in the cold, but they performed great! Had previously been considering airbags but decided to try the SumoSprings first. I'll never go back, they'll be on every truck I own from now on!

Nissan Leaf

After 1 year of working very hard towing 20k to 30k pounds, still working like new, I really recommend it! When towing with sumo spring make the load smoother and helps a lot leaf springs and shocks!!


Works as designed. No sqat when 5th wheel is hooked to truck. Highly recommend!!



Excellent product. Still functioning as designed after many trips with the 5th wheel.


They help a lot when towing large loads.

2018 Ford F-250 Super Duty

I purchased a set of the SumoSprings for my 2018 F-250 about a year ago. We had purchased a new fifth wheel, and although it towed great, the rear of my truck squatted about 3.5-4” when we were loaded for camping. After installing the SumoSprings—which was a very easy project—the rear of our truck only dropped 1.5” when loaded on the hitch. Plus, the ride was much smoother than before! When not towing, the SumoSprings do not affect the ride quality of our truck at all. Great investment for anyone who wants to improve ride quality and towing capability!

Rick E.


It’s been over a year since I put SumoSprings on my truck and they are still exactly what I needed! In fact, they’ve done such a good job that I ordered SumoSprings for trailers and added four of them to our fifth wheel’s suspension. They have really smoothed out the ride, especially over bridge transitions, and concrete pavement expansion joints!! Highly recommend doing this simple upgrade as well.


easy to install and when i pull my 5 wheel trailer 17000lbs it made level out without truck squatting

2021 Ford F-250 Super Duty

My second set of these and so easy to install. Works perfectly to prevent sagging and keep under better control.


Just as advertised and installation was easy.


They were easy to install and perform g reat!

Ford F-350 Super Duty

After much research, I opted for Sumo Springs for my 20 Superduty F350 4x4. Honestly I hadn't towed my 20,000 lb loaded weight 5th wheel Momentum too much without them on and even on rough roads I've never bottomed out my truck. They were very easy to install.

2022 Ford F-250 Super Duty

Product arrived quickly. Easy to install. Good communication.


Fast delivery and an easy install. I haven’t tried them with a load yet but, they seem perfect for helping to stabilize my truck when carrying my truck camper. They shouldn’t affect the ride when lightly loaded.



Excellent, my srw f-350 rides better than my previous drw f-350 with camper loaded

2022 Ford F-350 Super Duty

Very impressed. Easy install.

2019 Ford F-250 Super Duty

Installed them on my 2019 F250 liked the fact it didn’t change my unloaded ride, Once my 5th wheel with a 2500lb weight was hitched the truck lowered 2” make the truck level. The ride was very good while towing. I’m very happy with this purchase.


I received my order today had them installed in less than a half an hour looks great I would say it’s three times the size of the original ones should be no more sag.

Show More Reviews

See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • How To Pick Out SumoSprings Suspension Enhancement For 2020 Ford F-250
    Unless you are near or at maximum capacity for your truck tongue weight, it would make sense to use the lighter of the two, # SSR-127-47 instead of # SSR-127-54. This will provide you a smoother ride overall but especially when you're vehicle is not loaded. Either way the SumoSprings are a substantial upgrade from the factory bump stops, longer in design, and are more sturdy to absorb shock and progressively stiffen under loads. Included are video resources for additional information...
    view full answer...
  • What are the Best Rear Sumo Springs for my 2016 Ford F-250?
    For your 2020 Ford F-250 Super Duty there are two SumoSprings options that fit your truck like you mentioned. There's the 2,800 lb kit part # SSR-127-54 and the 1,500 lb kit part # SSR-127-47. Basically you want to go with the lightest duty kit that will work for your application. Going heavier than you need will give you a harsher ride quality than you'll want loaded and unloaded. You didn't mention the pin or tongue weight of your trailer, but unless you are at the max capacity of around...
    view full answer...
  • SumoSprings Fit on 2022 Ford F-350 Super Duty
    We do have SumoSprings that are a fit for your 2022 Ford F-350 Super Duty, though the specific part number you asked about are for some Chevy and Nissan vans. Instead, there are two options for SumoSprings that will fit your '22 F-350, including your 4WD model: - 1,500-lb Capacity: SumoSprings Solo Custom Helper Springs # SSR-127-47 - 2,800-lb Capacity: SumoSprings Solo Custom Helper Springs # SSR-127-54 The best one for your '22 F-350 really depends on if you do lighter or heavier-duty...
    view full answer...
  • Which SumoSprings Kit for 2020 Ford F-250 Towing Fifth Wheel Trailer
    The SumoSprings part # SSR-127-47 that you have now might be your best option but it depends on if you are happy with the amount of sag reduction it provides currently and the ride quality. It's a balancing act between support and ride quality so if you need more support I would go with the higher rated # SSR-127-54. You said the truck is sitting level now which most likely means it's sagging since the rear end of the truck probably sat up higher without pin weight on it. I would anticipate...
    view full answer...
  • Comparing SumoSpring Options for 2020 Ford F-350 Towing a 5th Wheel Trailer
    Really the only difference is that the SumoSprings # SSR-127-47 have a 1,500 lb weight capacity while the SumoSprings # SSR-127-54 have a weight capacity of 2,800 lbs. So one just offers more support for your 2020 Ford F-350 and would offer better performance for heavier loads. Since your 5th wheel has a pin weight of about 2,500 lbs I recommend going with the kit # SSR-127-54 so that this can help with all of the pin weight. It's important to note that all suspension enhancement systems...
    view full answer...
  • How To Determine The Correct Capacity SumoSpring For A 2022 Ford F-250
    Suspension enhancements don't increase the capacity of the suspension and are typically chosen based on the load that the truck will be handling. Too high of a capacity tends to give you a rough ride quality when unloaded because the enhancement is too stiff. Too low of a capacity and you'll have sag, uneven wear on your suspension, and bad handling. SumoSprings offer a much softer progression so they're one of the best options to handle the load and still give you a good unloaded ride...
    view full answer...
  • Recommended SumoSpring for 2022 Ford F-350
    I suggest the SumoSprings Solo Custom Helper Springs, # SSR-127-47 if you will be using this to tow but also as a daily driver. This is the better option to provide maintenance-free helper springs and still provide the factory comfortable drive when not loaded. These have a 1,500 lb. weight capacity while the SumoSprings, # SSR-127-54 have a weight capacity of 2,800 lbs. The SumoSprings Solo Custom Helper Springs, # SSR-127-47 compress according to the weight of your load. The sturdy...
    view full answer...
  • Availability of SumoSprings Kit that Fits 2024 Ford F-350
    Yes, we do have the SumoSprings Solo kit part # SSR-127-54 that is a confirmed fit for your 2024 Ford F-350. This will give you an additional 2,800 lbs of suspension support.
    view full answer...
  • Recommended Rear Suspension Enhancement For 2019 Ford F-250 W/ 2500lb Truck Bed Camper
    For your 2019 Ford F-250 Short Bed 4WD I recommend the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-127-54 that you were looking at as it has a 2800lb load rating which is perfecto for your 2800lb camper, and will help with sway and body roll. This will not affect the unloaded ride of your truck. I included a video of the # SSR-127-54 for you to take a look at.
    view full answer...
  • Is There a SumoSprings Solo Kit that Fits 2021 Ford F-250 Tremor
    We have a set of SumoSprings Solo springs part # SSR-127-54 which are a fit for your 2021 Ford F-250 Tremor but the kit you mentioned does not fit your truck.
    view full answer...
  • SumoSprings Suspension Kit Recommendation for 2024 Ford F-250
    For your 2024 Ford F-250 you would want the SumoSprings kit part # SSR-127-54 which is a confirmed fit that can give you an additional 2,800 lbs of suspension support. It will give you a great blend of support and ride quality that will get rid of suspension sag while also not giving you a harsh ride quality.
    view full answer...
  • SuperSprings SumoSprings for Rear Axle of 2019 Ford F-250 4x4
    Yes, for your 2019 Ford F-250 4x4 we have the Super Springs SumoSprings # SSR-127-54 that will work perfectly on the rear axle. These are confirmed to fit your truck and will simply replace the factory bump stop to provide much improved load support and a 2,800 pound weight capacity. I have attached a short video review and the written installation instructions that you can review. All the necessary hardware will be included.
    view full answer...
  • Could SumoSprings Kit that Fits 2019 Ford F-350 Help Prevent Front Tire Wear Issue
    The SumoSprings kit part # SSR-127-54 is a fit for your 2019 Ford F-350 dually and will do a great job giving you additional suspension support but it's hard to say if this will fix your tire wear issue. I'd recommend having the truck taken to alignment shop to make sure it's not out of alignment in anyway which might cause the issue.
    view full answer...
  • Recommendation of Suspension Enhancement for 2022 Ford F-350 Super Duty With Truck Camper
    For your application where the truck will be under constant load, jounce-style springs are a good option. I recommend going with the higher rated SumoSprings, # SSR-127-54. These have a 2,800 pound capacity and will do a really great job of bringing the truck back to level and smoothing out your overall ride. This is a simple no-drill installation and once they are in place you don't need to worry about performing any maintenance or making any adjustments to the springs.
    view full answer...
    Image 1 for
  • Do SumoSprings Help Reduce Sag and Improve Ride Quality for 2022 Ford F-250 Super Duty
    Yes, the SumoSprings Solo Custom Helper Springs # SSR-127-54 will work very well for your 2022 Ford F-250 Super Duty. The helper springs have progressive load control allowing them to compress by as much as 80 percent for support when you're hauling heavier loads for work. They also work independently of each other to compensate for off-center loads and reduce body roll with sharp turns. The SumoSprings are maintenance-free and made of a durable, high-density microcellular urethane. They...
    view full answer...
  • Which SumoSpring Kit for 2022 Ford F-350 Towing Fifth Wheel Trailer
    For your 2022 Ford F-350 Tremor towing a 12k fifth wheel I would go with the yellow SumoSprings kit part # SSR-127-54 which is going to give you the best blend of ride quality and suspension support. Black would be too light duty and blue would be too heavy duty and be harsh.
    view full answer...
  • SumoSprings for 2018 Ford F-250 SuperDuty FWD
    The SumoSprings Solo Custom Helper Springs part # SSR-127-54 with a 2,800 lb capacity are the springs you need to help with the rear sag of your 2019 Ford F-250. The stronger 2,800 lb capacity is what you need to handle the 1700 lb pin weight. The springs will work well to level out the ride but they are made from a lighter weight micro-cellular spring. The micro-cellular material allows the spring to be progressive so they compress more with weight and less with a lighter load which...
    view full answer...
  • How Will the SumoSprings Helper Springs # SSR-127-54 Affect Ride Quality On 2018 Ford F-350 Unloaded
    With the SumoSprings Solo Custom Helper Springs # SSR-127-54 for your 2018 Ford F-350 you do get a 1" and 1/2" spacer. These spacers will allow you to increase or decrease the air gap between the axle and SumoSprings. The larger the air gap the less noticeable the springs will be on your ride quality when daily driving. When daily driving you may notice a slight increase in stiffness when hitting large bumps as your suspension is already going to be very stiff with a 1-ton truck unloaded....
    view full answer...
  • Dimensions of Sumo Springs # SSR-127-54 for 2017 F250
    I spoke with my contact at SumoSprings and he informed me that the dimensions of the # SSR-127-54 are 10-3/4 x 7-1/4 x 4-1/2 inch. Just the yellow portion of the spring is 7 inches tall.
    view full answer...
    Image 1 for
  • Will SumoSprings SSR-127-54 Fit 2019 Ford F-250 with Golf Cart in Bed
    Hey Jack, the SumoSprings Solo kit part # SSR-127-54 would be a great option that is a confirmed fit for your 2019 Ford F-250. This will give you the additional suspension support for the rear of the truck to prevent the suspension sag you have when the 900 lb golf cart is in your truck bed.
    view full answer...
  • How to Choose Correct SumoSprings Suspension Enhancement for 2019 Ford F-250
    The available SumoSprings Solo Custom Helper Springs for your 2019 Ford F-250 mainly just differ in their weight capacities. For your application where the truck will be under an almost constant load jounce-style springs like these are definitely your best option. Because it sounds like you're dealing with quite a bit of weight and the rear sag is noticeable I recommend going with the higher rated SumoSprings # SSR-127-54, which have a 2,800 pound capacity. These will do a really nice...
    view full answer...
    Image 1 for
  • Recommended Suspension Enhancement for a 2020 Ford F-250 Tremor
    While we do not carry any air springs for a 2020 Ford F-250 Tremor, we do have other suspension enhancements available to you. I recommend the SumoSprings Solo Custom Helper Springs, part # SSR-127-54. These are jounce-style springs, so they are a one-time installation and don't need to be adjusted afterward like air springs. Plus, they have a progressive load control, compressing more softly under lighter loads and more rigidly under heavier loads without you needing to monitor them....
    view full answer...
  • Dealing with Limited Ground Clearance Towing Airstream Trailer with 2020 Ford F-250
    You're likely going to experience some bottoming out, which is part because of the squat on the truck, but also because of how low that Airstream trailer sits. It may not be too severe, but I can potentially see the occasional issue popping up. To combat the squat of the truck I recommend using the Super Springs SumoSprings Custom Solo Helpers # SSR-127-54, which are easy to install and will help take some of the strain off of the suspension system on the truck. The other thing you...
    view full answer...
  • Determining if 1 or 2 Spacers Should Be Used With SumoSprings On a 2020 Ford F-350
    The SumoSprings Solo Custom Helper Springs # SSR-127-54 includes 2 1/2" thick spacers which will allow you to dial in the ride quality on your 2020 Ford F-350. It is recommended to use at least one of the spacers while the 2nd spacer can be used if you are more concerned about reducing as much sag as possible. As these springs are progressive the additional spacer will provide more stability with your load. In the end the spacers(1 or 2) are entirely dependent on your preference.
    view full answer...

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