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SumoSprings Solo Custom Helper Springs - Rear Axle

SumoSprings Solo Custom Helper Springs - Rear Axle

Item # SSR-127-54
Our Price: $369.99
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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
  • SuperSprings Intl
  • Standard Duty

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   (1704 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.


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.


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

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.

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.

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!

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.
Rick E - 10/31/2021


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
John - 04/14/2022


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.


great product, i've used air bags in the past and these are the best of both worlds . I pull a 30' enclosed trailer on a 21'f250 crew cab


I’m sold, even if I was buying a new truck I would put them on rite away. Noticeable better ride and load handling.

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.


Make sure the UPS tracking number is obvious when you follow your original shipment email, its hard to back track your package. I give a 5 on getting the part and a 1 on the ease of tracking your order.

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.


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


I have had them one year with no problems. They support the truck and we're easy to install.


these made a huge difference to the trucks carrying capacity, were very easy to install, and only stiffened the ride moderately. I'm very pleased.


Just as advertised and installation was easy.


They work great. More stability when to wing.


I bought these when I had a 27' TT. They worked perfect. I recently upgraded to a 40' 5er. They still handle the load very well. However, not being able to adjust the ride height to give the truck a more level stance will have me installing bags. I would highly recommend these for a smaller load like a TT.
I will say that the ride did stay like factory with out a load on them. This was very nice. Also, with a load the truck was very stable going down the road.

Ford F-250 Super Duty

Best thing I've added to my F250. Truck sits nice and level with my trailers attached. Rides great with them connected too.


Very easy to install (15 min. each side) and worked exactly as advertised, 5th wheel has a 2800 lb tongue wt. and my 2020 F250 rode fairly level with only one shim, I may add the second to see how that levels it a bit more. Etrailer shipped the day I ordered and I received it a day before I thought I would, very good customer service, and good product videos and information!

2017 Ford F-250 Super Duty

So far so good. Very easy to install with basic hand tools. I did have to use an impact wrench to remove the oem bumper brackets as they were on very tight. Did not give 5 stars as I need to put 3000-4000 pounds in the back of the truck to see these springs take some weight.


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.

2019 Ford F-250 Super Duty

Product was easy to install. Product tighten up the suspension on my 2019 F-250. Made hauling my Lance Truck Camper more enjoyable.

2020 Ford F-250 Super Duty

Although I have not installed them yet, my experience etrailer is 5 star. I had a question before I ordered them and customer service assured me it would fit. The email I received with the names of people involved in getting my order shipped made it personal.
Thank you


Got the Sumo Springs for my 2020 Super Duty, and installed them today. Easy installation and perfect fit. Can't wait to hook up the fifth wheel.

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...
  • 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...
  • 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...
  • 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...
  • 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...
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  • 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
  • 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...
  • 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...
  • 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...
  • Will SumoSprings for 2020 Ford F-350 Bottom Out With Heavy Capacity
    That's a good question, but the SumoSprings Solo Custom Helper Springs # SSR-127-54 that fit your 2020 Ford F-350 are not going to bottom out despite the fact you have more than the 2,800 lb capacity rating of the springs. That weight rating is just the amount of weight it takes to compress the spring down to 50 percent of its original height. The added weight you are putting on them will not bottom them out and they'll still be beneficial to your truck when towing your 5th wheel.
    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...
  • 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...
  • SumoSprings Helper Springs on 2017 Ford F-350
    The SumoSprings Solo Custom Helper Springs # SSR-127-54 are confirmed to fit on your 2017 Ford F-350. They're there to help support your truck when it's under a heavy load like the truck bed camper you have. They will not be used when not under load unless you hit a hard sudden bump.
    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...
  • 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
  • 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...
  • 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...
  • Recommended SumoSprings For A 2022 Ford F-350 Super Duty Towing A 5th Wheel Trailer
    I would recommend the SumoSprings Solo Custom Helper Springs # SSR-127-54 for your 2022 Ford F-350 Super Duty. This kit has a weight capacity up to 2,800 pounds so with your fifth wheel trailer having a pin weight of around 2,500 pounds this will be the best option. To point out that all suspension enhancement systems are only meant to add support to the OEM suspension and they will not increase the weight capacity of the vehicle. The SumoSpring kit has a no drill installation. If 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...
  • Recommended Suspension Enhancement For 2019 Ford F-350 Towing 5th Wheel Trailer
    For your 2019 Ford F-350 Long Bed Diesel towing a 5th wheel trailer with a pin weight of 2200lbs I recommend the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-127-54 which offers 2800lbs of support to your rear suspension which is perfect for your needs, and will not affect your unloaded ride quality. The # SSR-114-54 you were looking at only fit the 1999-2016 Ford F-250/350 and would not work on your truck. I included a video of the # SSR-127-54 for you to take a look at.
    view full answer...
  • SumoSPring Recommendation for my 2020 Ford F-350 Dually without Jounce Bumper Stops
    I have two good options for your 2020 Ford F-350 Dually that does not have the jounce bumper stops present. The SumoSprings Solo Custom Helper Springs part # SSR-127-47 are designed to give 1,500 lbs. of load leveling support and the SumoSprings Solo Custom Helper Springs part # SSR-127-54 are designed to give 2,800 lbs. of load leveling support. These have a one piece design and have spacers that will allow you to take up the gap between where the jounce bumper is on most vehicles and...
    view full answer...
  • Will SumoSprings Work with B&W Gooseneck Hitch on a 2016 Ford F-250
    Yes, the SumoSprings Solo Custom Helper Springs part # SSR-127-54 the bump stop mounts underneath the frame rail, so it is compatible with the B&W Turnoverball Underbed Gooseneck Trailer Hitch part # BWGNRK1111.
    view full answer...
  • Rear Suspension Kit Compatible with 2018 Ford F-350 with Factory In-Bed Hitch
    The installation brackets of the Firestone rear air bag kit # F2600 will interfere with the factory hitch installation in your 2018 F-350, but we do offer jounce spring kits that will work along with the factory hitch. SuperSprings jounce spring kit # SSR-127-54 fits both 2WD and 4WD versions of the F-350 and installs without drilling. This set of springs will provide 2800-lbs of leveling support, and unlike air bags, will require no maintenance. These SuperSprings will stiffen the rear...
    view full answer...

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