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SumoSprings Maxim Custom Helper Springs - Rear Axle

SumoSprings Maxim Custom Helper Springs - Rear Axle

Our Price: $779.99
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Vehicle Suspension

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7,000-lb Capacity. Maintenance-free microcellular urethane springs upgrade your vehicle's rear suspension. They cushion bumps and support a heavy load to level your ride and minimize sway. Springs attach at top and bottom for constant support. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Maxim Custom Helper Springs - Rear Axle part number SSR-180-54-1 can be ordered online at or call 1-800-940-8924 for expert service.
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SuperSprings Intl Vehicle Suspension

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

7,000-lb Capacity. Maintenance-free microcellular urethane springs upgrade your vehicle's rear suspension. They cushion bumps and support a heavy load to level your ride and minimize sway. Springs attach at top and bottom for constant support.


  • Helper springs upgrade your vehicle's rear suspension for improved driver control and comfort
    • Support heavy rear loads to keep your vehicle level
    • Help to absorb bumps and shocks
    • Minimize sway
  • Progressive load control - springs compress according to the weight of your cargo
    • Lighter loads - springs compress easily at first for soft engagement and a less bumpy ride
    • Heavier loads - springs compress by as much as 80 percent for support
  • Springs work independently from each other to compensate for off-center loads and reduce body roll during sharp turns
  • Springs are connected to your vehicle at top and bottom to provide support even when your vehicle is unloaded
    • Expand up to 50 percent of their height
  • 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 expand and 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
  • Custom installation with included hardware - drilling required
  • 2 Springs and necessary hardware included
  • Made in the USA


  • Weight capacity (at 50-percent compression): 7,000 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee

Rear Suspension Support

SumoSprings helper springs are great for RVs or motor homes. Heavy rear loads can cause sag as your factory suspension compresses under the weight of the load. This means that the rear axle is trying to support not only the extra load but also the motor home's weight. 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.

SumoSprings diagram of installation above existing vehicle spring

Each spring in this kit is bolted to two mounting brackets. One bracket is attached to the frame of your vehicle, and the other bracket is attached to the axle, typically above your existing factory leaf spring. Because each helper spring is in full contact at the top and bottom of the suspension's travel, the expanding and contracting action of the SumoSprings enhances your ride under all conditions, not just when it's loaded. And the closed-cell urethane springs act like a shock absorber to dampen road vibration.

SumoSprings compressing under load

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 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.

SumoSprings expanding to allow play in the suspension

These springs extend in height by as much as 50 percent to allow more movement in your suspension when you're traveling unloaded, making your ride smoother and more comfortable.

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 expand and 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.

This kit comes with custom-fit brackets that are designed to easily bolt onto your vehicle.

SSR-180-54-1 SuperSprings Sumo Springs Maxim Rear Vehicle Suspension Kit for Motor Homes

Replaces SSR-180

Item # SSR-180-54-1

Installation Details SSR-180-54-1 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

SumoSprings Maxim Custom Helper Springs - Rear Axle - SSR-180-54-1

Average Customer Rating:  4.8 out of 5 stars   (257 Customer Reviews)

7,000-lb Capacity. Maintenance-free microcellular urethane springs upgrade your vehicle's rear suspension. They cushion bumps and support a heavy load to level your ride and minimize sway. Springs attach at top and bottom for constant support.


These are a great product, but this rear set is not easily installed by a non-professional. Since they require drilling the frame of the RV and/or removing the rear wheels, I had a local shop install them.


Best upgrade we did on our RV suspension - strongly recommend this for your RV


What a great addition to my newly purchased motorhome. I was disappointed in the ride of my 2014 Winnebago Vista. The SumoSprings improved both the ride and handling.


They’re asking me for a review the day after I received these items. I can only give it 3 stars because I could only install the fronts today as there was no hardware in the box for the rears.
I immediately opened the boxes and called. A very nice person explained how backed up they were and it would be 3-4 days before a request could even be submitted for new mounting hardware. We can only see. I’m hoping I can revise this rating later if I get the hardware in a reasonable timeframe. To be fair the box was retaped. Well never know if it was UPS or the original packer. I’m
Most likely going to be leaving on my next trip with only fronts installed. They weren’t bad to install. Between the written directions and the [online video]. The only thing left out is I raised and lowered the unit to be sure the pieces were lined up before tightening. It’s really the only way.

Ford Edge

Quality looks great, on my RV I had to pull the rear tires off to drill the holes for the top mount also cut the body edge to slide the top bolts of the mount so it sits flush with the frame. Have not driven it yet will put an update on change.


I needed to replace the existing Firestone air bags on the rear of my class "A" motorhome and after doing some research on the Sumo springs I opted to try them. The one big advantage right off the bat was I didn't have to worry about air pressure adjustment prior to a trip. This particular kit was a very easy install in that the upper mounting bracket for the Sumo was identical to the existing Firestone air bag mount with the same hole pattern for bolting the new Sumo spring to the frame. The first trip out I immediately noted a more stable ride with less side roll. The whole RV seemed to be planted more firmly to the road. So far I am very satisfied with install of these suspension parts. I look forward to many years of a better ride!


Body roll and stability greatly improved


We have been extremely happy with the installation of the Sumo Springs to the front and rear of our class A motorhome. This in combination with the addition of Safety Steering has made a tremendous difference in comfort and driving. I belong to several motorhome groups and have recommend Sumo Springs to anyone interested in upgrading their rig.


My 2007 Allegro Bay on an F53 chassis had a real tendency to bob and weave on crooked roads and in windy weather. The Sumo Springs removed virtually all the instability. The coach handles much better and I am not as fatigued at the end of the day.




Before installing the Sumo Springs my motor home had a dangerous sway and would bottom out going on and off bridges and over passes. After installation, I have much better control of the vehicle. Sumo Springs have made my vehicle a much more comfortable vehicle to drive.

I really appreciate the difference the springs have made in the handling of my motor home. Before them I worried about bottoming out and loosing control getting on and off bridges and overpasses. Now my trips are more relaxed. Having the right parts delivered the first time also was really appreciated. Thanks again.
Charles S - 12/27/2017


Reallyimproved the ride and handling


Makes a difference in the ride. Videos were a life saver.

Holiday Rambler

Just made the first trip with Sumo System on our2017 Holiday Rambler. The System improved the ride greatly. No more sway and no top heavy lean.


The Sumo springs are doing the job. etrailer had the best prices, took some shopping around to find a qualified, fair priced installer.


Installed the new sway bars and the sumo springs and the handling is vastly better than it was before-- well worth the investment-- thanks


That is the best thing to improve the handling of my motorhome


etrailer's service is excellent. Robert helped me with the order and was very pleasant to deal with. I felt I got a good price and even better customer service. and the order was delivered before the promised date.


This product helps to control road bump shocks on our Tiffin class A gas M/H as well as control rolling action whether from slow speed turns or wind from passing trucks. It is well worth the cost!


Performed as expected. Timely delivery.


Improved the ride on my 2010 Winnebago 36’ class A gasser


Delivered on time.

2014 Coachmen Encounter Motorhome

Easy install, haven't driven the motorhome yet waiting to install year springs.


Still great after one year.


Show More Reviews

See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Install Instructions For SumoSprings Custom Helper Springs For 2013 Winnebago On Ford F-53 Chassis
    I have attached the installation instructions for the SumoSprings Maxim Custom Helper Springs, part # SSR-180-54-1. As the instructions show, it is an easy, bolt-on installation and all of the necessary hardware is included. Please note that installing these will not increase the load-carrying capacity of your Winnebago.
    view full answer...
  • Recommended SuperSprings Front Axle Helper Spring Kit for 2007 Ford F-53 Motorhome
    SumoSprings Solo Custom Front Helper Springs # SSR-180-54-1 are a confirmed fit on the 2WD Ford F-53 chassis for model years 1990 through 2016 so they will work fine on your 2007. A review video and the written installation instructions are linked for you. This and other kits are shown on the linked page.
    view full answer...
  • Can Sumo Springs be Installed Just on the Front of my Ford F-53 Chassis
    Yes you can install the Sumo Springs on just the front or on just the back . It sounds like your taking the right steps in correcting the common handling issues found with most coaches out there. If you have a Ford F-53 Chassis from 2008-2019 Sumo Springs Rebel Custom Helper Springs part # SSF-170-40-2 will be an exact fit. They can really help out with vehicle sway. As a second recommendation if not already installed a steering stabilizer does a good job of saving a lot of drivers fatigue...
    view full answer...
  • Can RV Be Driven with Just Front SumoSpring Axle Kit Installed
    Yes, it's perfectly safe to drive an RV with just a front or rear set of SumoSprings installed. People frequently just buy them for one axle all the time and ride quality is still improved. If it was dangerous to only install one set they would always be sold in sets that include the front and back.
    view full answer...
  • Are the SumoSprings Maxim Custom Helper Springs Compatible with the 2016 Mirada 32UD
    The SumoSprings Maxim Custom Helper Springs - Rear Axle, part # SSR-180-54-1, is definitely compatible with your 2016 Coachmen Mirdara 32UD. Your motorhome is built on the Ford F-53 chassis, so the springs are the perfect suspension enhancement for you. I've linked to a video installation of these springs for your reference.
    view full answer...
  • Recommended SumoSprings for 2011 Tiggin Open Road 34TGA Motorhome on Ford F-53 Chassis
    For your 2011 Tiggin Open Road 34TGA the SumoSprings Maxim Custom Helper Springs # SSR-180-54-1 are a confirmed fit. These are intended to be used on motorhomes with a GVWR from 20 to 22 thousand pounds. For a little heavier spring, the # SSR-187-54-1 is rated up to 26 thousand pounds. See the review videos I've attached of both parts.
    view full answer...
  • Suspension Enhancement for 2017 Thor Challenger 37TB Motorhome on Ford F-53 Chassis
    Both the SumoSprnigs # SSR-187-54-1and the # SSR-180-54-1 a very similar and serve the same purpose. The main difference is that the # SSR-180-54-1 are not designed to fit your 2017 Thor Challenger and the # SSR-187-54-1 springs are.
    view full answer...
  • SumoSpring Rear Helper Springs For a 2014 Holiday Rambler Vacationer on Ford F-53 Chassis
    I checked the specs for your Holiday Rambler Vacationer built on the Ford F-53 chassis and found that it has a gross vehicle weight rating of about 20,000 pounds. There are a coupler of SumoSpring options for this RV and weight rating. For the rear you can use # SSR-180-54-1 rated for 5,600 pounds or # SSR-187-54-1 rated for 5,400 pounds but requires drilling.
    view full answer...
  • SumoSprings Suspension Enhancement for 2015 Thor Mirimar RV
    We have several SuperSrings SumoSprings that will fit your 2015 Thor Mirimar on a Ford F-53 chassis. I've linked our selection on this page. You'll want to choose a kit based on what you're looking for (Front or rear) and your motorhome's GVWR. One example is the SumoSprings Maxim # SSR-187-54-1. They're for a coach with a capacity between 20,000 and 26,000 pounds. I've linked an install video for you. Make note that the # SSR-180-54-1 kit that is linked on the page will fit an F-53...
    view full answer...
  • SumoSprings Maxim Custom Helper Springs for 1999 National 36 Foot RV on Ford F-53 Chassis
    For your 1999 National 36 foot RV on Ford F-53 chassis, if you have the Tropi-Cal it is 18,0000 lbs gvwr. If the Topical is what you have then the SumoSprings Maxim Custom Helper Springs - Rear Axle # SSR-187-40-1 is what you will want. If it is between 20,000 and 22,000, then you will use the SumoSprings Maxim Custom Helper Springs - Rear Axle # SSR-180-54-1. If it is 24,000- 26,000 lbs then you will use # SSR-183-54-1. If you check your gvwr which will be on your frame or inside a...
    view full answer...
  • Recommended SumoSprings Helper Springs for 2017 Winnebago Sunstar LX 27N on Ford F-53 Chassis
    According to SuperSprings, the # SSR-180-54-1 SumoSprings are a fit for the 35B and 35F Sunstar LX, for your 2N7, you'll want to use # SSR-184-40-1. I'll link you to a product installation video that you might find helpful.
    view full answer...
  • Helper Springs for a 2014 Tiffin Motor Home Built on a Ford F-53 Chassis
    Since your motor home, built on the Ford F-53 chassis, has been upgraded to a higher 24K rating, you will need to avoid helper springs that are designed for up to 22K rated chasses. You would instead look at products for the 24K to 26K rated chasses such as # AL88344. A Replacement or additional anti-sway bar would also help. I have included a link to the right to the other stabilization products we offer for the 2014 Ford F-53 chassis.
    view full answer...
  • Recommended Suspension Enhancement for 1998 Minnie Winnie on Ford E-350 Cutaway Chassis
    I have a solution for you, but the SuperSprings Maxim Custom Helper Springs # SSR-180-54-1 are not a fit for your 1998 Minnie Winnie on a Ford E-350 Cutaway Chassis. Instead, you will want to use the SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA22, which are designed to fit on the 1998 Ford E-350 Cutaway Chassis. This suspension enhancement will help reduce sway and prevent sagging that may effect the handling on your 1998 Minnie Winnie. These are a maintenance...
    view full answer...
  • Suspension Solution for Leveling 2017 Winnebago Vista LX 35B
    While I have a solution to help level your 2017 Winnebago Vista LX 35B, I would not recommend drilling the hole at a different height for your # SSR-180-51-1 Sumo Springs. Instead, I recommend using air bags for your suspension enhancement. The Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL88344 are a confirmed fit for your Winnebago. The hybrid spring system combines the adjustability of air springs with the reliability of jounce-style springs....
    view full answer...
  • Rear SumoSprings for 2020 Fleetwood Bounder on Ford F-53 Chassis
    For the rear axle on your motorhome's Ford F-53 chassis the correct SumoSprings Helper Spring kit is the part # SSR-180-54-1. I verified this with SuperSprings. These durable high-density urethane springs will provide up to 5,600 pounds of load-leveling support and will absolutely improve your ride by reducing sway and creating a more level setup. I have attached a sample installation video below that you can also check out. The SumoSprings Rebel Custom Helper Springs # SSR-101-47-2...
    view full answer...
  • SumoSpring Suspension Enhancement for 2017 Fleetwood Bounder with 22k Ford F-53 Chassis
    If you wanted to install SumoSprings on your 2017 Fleetwood Bounder built on a Ford F-53 that are designed for the higher GVWR chassis you could but you should note that it would probably give you a harsher ride quality than you'd want. For GVWR between 20k and 26k you'd want the part # SSR-187-54-1. The kit for 20-22k like what you have would be the part # SSR-180-54-1 which would give you the support you want without sacrificing ride quality. I can see how it would be tempting to go...
    view full answer...
  • SumoSpring Suspension Enhancement Kit Recommendation for 2016 Newmar Bay Star Sport 3306
    For your RV built on a 2016 Ford F-53 chassis the only SumoSprings kit we have that states that it does not fit Newmar chassis is the part # SSR-180-54-1. For the front axle the SumoSpring kit you'll want is the part # SSF-170-40-2 and then for the rear you'll want the part # SSR-187-54-1.
    view full answer...
  • SumoSprings for 2016 Ford F-53 Class A Chassis with GVWR 20,500 lbs
    For the front suspension on your 2016 Ford F-53 you need the SumoSprings Rebel Custom Helper Springs # SSF-170-40-2. For your rear suspension it will differ a little depending on what motorhome you actually have. Here is a list of what kit you may need: Part - # SSR-180-54-1 Does not fit Fleetwood, Forest River, Newmar, or Thor Motorhome models Part - # SSR-187-54-1 Does not fit Coachmen, Holiday Rambler, Jayco, Tiffin, or Winnebago Attached are some sample installation videos you can...
    view full answer...
  • Recommended SumoSprings For 2012 Tiffin Allegro 32CA Motorhome On F53 Chassis with 22K GVWR
    For the front axle I recommend the SumoSprings Rebel Custom Helper Springs # SSF-170-40-2. These springs have a 3,000 lb weight capacity at 50% compression. Fits the 2008 to 2017 F53 Tiffin models. Looks like the part # SSF-171-40-2 is for the earlier model years 2004 to 2007. For the rear axle, the springs I recommend are SumoSprings Maxim Custom Helper Springs part # SSR-180-54-1. These springs have a 7000 lb weight capacity at 50% compression. I have attached a link to a couple of...
    view full answer...
  • Correct SumoSprings For Front and Rear Axle of 1999 National Sea View Motorhome Built On F53 Chassis
    I would be happy to help! For your 1999 Nation Sea View Motorhome built on the Ford F-53 chassis with a 20500lb GVWR you will need the SumoSprings # SSR-187-54-1 with a 7000lb capacity for the rear axle, and the # SSF-172-40-2 with a 3000lb rating for the front axle. This will give you a much smoother ride, and will help fight sway and body roll giving you a much more pleasant driving experience. The # SSR-180-54-1 you mentioned are only confirmed to fit the 2006-2021 Ford F-53 chassis...
    view full answer...
  • Rear SumoSprings Kit to Use with 2015 Tiffin Allegro Motorhome 35QBA
    For rear SumoSprings that fit your 2015 Tiffin Allegro Motorhome 35QBA that is built on a Ford F-53 chassis you would want the SumoSprings Maxim part # SSR-187-54-1 which would work great with the front set you mentioned # SSF-173-40-2 as well.
    view full answer...
  • Front Anti-Sway Bar for a 2015 Georgetown/2014 Ford F53 Chassis w/Steering Stabilizer
    You can install the front anti-sway bar # RM-1139-148 on your 2015 Georgetown built on the 2014 Ford F-53 chassis. It is meant to replace the factory bar with upgraded parts including the bushings. Since it fits in place the factory bar it will not interfere with the steering stabilizer. The only thing left would be to install suspension enhancement # SSR-180-54-1 which will fit models with a 16k to 22k gross vehicle weight rating. These springs will further reduce sway, rear end sag,...
    view full answer...
  • Suspension Kits for 2008 Tiffin Class A Motorhome on Ford F-53 V-10 Chassis
    Tiffin offers several versions of their Class A Allegro series motorhomes that are based on the Ford cab and chassis, such as the 35-foot 35QBA that features the Ford 6.8-liter V-10. And we do offer suspension enhancement products for various models years of the F-53 chassis. The linked pages will show you various kits that fit the different versions of the 2008 Ford F-53 chassis. One link is for suspension enhancement kits and the other is for front and rear sway bars and steering stabilizers...
    view full answer...
  • Fitment of Super Springs Sumo Springs on a 2013 Winnebago Class A RV with a F-53 Chassis
    You are correct that the Sumo Springs Solo # SSF-170-40-2 is the correct front axle kit for your 2013 Ford F-53 chassis. This spring will replace your factory jounce bumper assembly on your frame. So it will not actually connect at the bottom of the spring. The bottom of the spring will brace the axle under weight and pressure from the RV when needed creating a smoother supported ride. The product is designed to enhance load carrying ability, stabilize sway, and improve overall driver...
    view full answer...

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