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  1. Vehicle Suspension
  2. Tiffin
  3. Allegro Motorhome
  4. 2014
  5. SuperSprings Intl
FITS 2014 Tiffin Allegro Motorhome
SumoSprings Maxim Custom Helper Springs - Rear Axle

SumoSprings Maxim Custom Helper Springs - Rear Axle

Item # SSR-180-54-1
Our Price: $779.99
You Save: $112.19
Vehicle Suspension
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2014 Tiffin Allegro Motorhome




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Call at 1-800-940-8924 for expert service. We are your Tiffin vehicle suspension experts, and offer a great price. carries a complete line of SuperSprings Intl products for your Tiffin Allegro Motorhome 2014. SumoSprings Maxim Custom Helper Springs - Rear Axle part SSR-180-54-1 from SuperSprings Intl can be ordered online at Complete vehicle suspension installation instructions and technical support.
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  • Reviews (266)
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2014 Tiffin Allegro Motorhome - SumoSprings Maxim Custom Helper Springs - Rear Axle

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

7,000-lb Capacity. Maintenance-free microcellular urethane springs upgrade your Tiffin Allegro Motorhome'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 Tiffin Allegro Motorhome Suspension Kit for Motor Homes

Replaces SSR-180

Installation Details SSR-180-54-1 Installation instructions

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   (266 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.

2010 Ford F-150

I bought and installed these for
2012 f53 motorhome chassis. They make the ride too stiff. Does better side roll. But bounces everything inside going down the road. Maybe the next spring level down would be better?

In order for me to better assist you, we will need the Gross Vehicle Weight Rating. Also, please check your rear frame area to make sure it looks flush, like there’s no metal bars or brackets welded on the frame.
-- Etrailer Expert Katrina B - 03/03/2023


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.


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


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.


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!


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.


Body roll and stability greatly improved


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




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


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


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


Reallyimproved the ride and handling

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.


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.


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


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!


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


Performed as expected. Timely delivery.

2014 Coachmen Encounter Motorhome

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


Delivered on time.


Still great after one year.

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