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  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Bump Stops
  4. Towing/Load Leveling
  5. Front Axle Suspension Enhancement
  6. Standard Duty
THIS ITEM IS NOT A FIT FOR
1991 Chevrolet Caprice
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SuperSprings Intl

SumoSprings Solo Custom Helper Springs - Front Axle

Part Number: SSF-303-54
In Stock
$258.99
Vehicle Suspension
Not Confirmed to Fit

1991 Chevrolet Caprice

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2,800-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. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Solo Custom Helper Springs - Front Axle part number SSF-303-54 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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SuperSprings Intl Vehicle Suspension - SSF-303-54

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • 2,800-lb Front-End Support: Keeps heavy loads like plows or winches level for steadier control.
  • Zero Maintenance Required: No air lines or pressure checks, just install and forget.
  • Smoother, Safer Ride: Cushions bumps and absorbs shocks to reduce sway and body roll.
  • Progressive Load Control: Springs stay soft when light and firm up to 80% for heavy loads.
  • Durable Urethane Build: Resists oils, salts, UV rays, and temps from -25 F to 200 F for long life.
Made in USA

Features to know about

Stay Level and Confident: 2,800-lb Front Suspension Support

When a snowplow, winch, or other heavy gear pushes your front end down, steering and braking can feel off. These SumoSprings Solo helper springs add up to 2,800 lbs of support at 50-percent compression to keep the front of your vehicle level and steady. They help your factory suspension carry the extra load so your ride height stays even and your handling feels sure and controlled.

Comparison of SumoSprings Solo Custom Helper Springs installed on a vehicle showing uncompressed and compressed states to demonstrate front axle suspension support.

Smooth Out Bumps and Vibration: Progressive Load Control

Every bump and dip doesn’t have to shake your teeth. The microcellular urethane springs compress easily on light loads for a soft, comfortable ride, then firm up as weight increases to keep things stable. Acting like built-in bump stops, they cushion impacts and dampen road vibration for a smoother drive whether the load is light or heavy.

Stay Steady in Crosswinds and Turns: Independent Spring Action

When you turn sharply or run with an uneven load, each spring works separately to keep its side planted. This independent action cuts down on body roll and sway so the vehicle feels balanced through corners, crosswinds, or uneven roads.

Built Tough to Handle Real Conditions: Maintenance-Free Design

Made from high-density microcellular urethane, these springs stand up to oil, road salt, and UV exposure while performing in temperatures from -25°F to 200°F. They compress vertically with minimal side expansion, so nearby parts stay safe in tight spaces. With no air lines or pressure adjustments to worry about, they deliver solid support with zero maintenance for the long haul.

Easy Bolt-On Upgrade: No Drilling Required

Installing suspension support shouldn’t need a full shop setup. These custom-fit helper springs mount directly in place with no drilling required—just solid hardware and smart design that’s ready to bolt up and get you back on the road.

Specs

Weight and Capacity

  • Weight capacity (at 50-percent compression): 2,800 lbs

Warranty

  • Limited lifetime warranty
  • 30-Day satisfaction guarantee

SSF-303-54 SuperSprings Sumo Springs Solo Front Vehicle Suspension Kit for Trucks

Replaces SSF-303

Installation Details SSF-303-54 Installation instructions

This Product Fits The Following Vehicles




Video of SumoSprings Solo Custom Helper Springs - Front Axle
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for The Low-Down on the SumoSprings Solo Custom Helper Springs-SSF-303-54

Speaker 1: Today we're taking a look at the Sumo Springs solo custom helper springs for the front axle. This product fits certain years of the Dodge Ram and Ram 4500 and 5500 trucks. To ensure, double check that this is a fit for your vehicle, you can use the vehicle fit guide, which is located at eTrailer.com.Now helper springs are designed to upgrade your vehicles front suspension for improved driver control and comfort. They simply replace your factory springs. With these installed you'll notice better support for front and heavy loads. They do a better job at supporting those heavy front end loads, which is going to help keep your vehicle level.

These also help to better absorb bumps and road shocks. You'll also notice that they help reduce, or minimize, sway. They do feature progressive load control so these springs will actually compressor according to the weight of your cargo. For lighter loads, the springs compress easily at first, for soft engagement and a less bumpy ride. Then for heavier load, the springs compress for as much as 80% for support.Now, they are a nice stiff design.

When I try to compress them, you can't really see much. That's because these are designed for heavy loads. They're really nice, durable, micro cellular designs. The urethane is a high density. It's very durable, it works in temperatures from negative 25 degrees Fahrenheit to 200 degrees Fahrenheit.

They're designed to resist damages typically caused by oils, road salts, and UV rays. Now these springs do work independently from each other to compensate for off center loads. That's really going to help reduce body roll when you're going around a turn, or cornering, or maybe sudden maneuver or a sharp turn.They also feature minimal lateral expansion. These springs will compress vertically instead of off to the side, so they aren't easily damaged when operating in tighter spaces. My favorite feature about these springs is that they're completely maintenance free.

There's no tubing to run, or air pressure to monitor, like with air springs. It's a simple no drill installation. They simply push into the retaining cup on your vehicle, where your factory springs we're installed.They do include nice installation instructions, so you can see there, right here points out your new spring compared to the OEM, or factory one. Shows how it installs it. On the back, you have kind of a line by line breakdown of the installation process. This product is made in the USA. When it comes to the weight capacity at 50% compression, we're looking at 2,800 pounds. It's important to keep in mind that Sumo springs do not increase your vehicle's weight carrying capacity.That's going to do it for today's look at the Sumo Springs custom helper springs for the front axle.

Ratings & Reviews

4.7

774 reviews
5 Stars
(644)
4 Stars
(92)
3 Stars
(18)
2 Stars
(7)
1 Star
(13)
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by:
2022 Ram 5500
great customer service, and fast shipping
by:
Improved ride and helped eliminate sway.
by:
by:
Product is great, exceeded my expectations. Install is simple and straightforward. It’s a night and day difference in both the body roll and the handling small bumps all the way up to off-road conditions.
James D. profile picture
Etrailer Expert

James D.

8/3/2026

Appreciate you leaving a review Austin, It's always nice when a product exceeds expectations and these springs have been highly rated. Are you typically off road or do you plan on towing?

by:
What most new RV owners don't know is that the chassis that their new mobile home sits on barely has the equipment to support that new home. Adding SumpSprings is going to improve your ride and help support the structure of your home. FYI, use a jack on the leaf springs to help align the holes on the bracket to the ones on the frame.
by:
2015 Mercedes-Benz Sprinter
Super easy to install maybe 30 minutes for all 4
Fronts were done from above with wheel turned full right or left and load off that side with jack,rears jack to take off load only used large flat head screw drive to remove replace
improved side to side roll/sway ride is firmer went with the black capacity maybe yellow on rear if loads increase
Lazer S. profile picture
Etrailer Expert

Lazer S.

10/21/2025

30 Minutes for all 4?! That's got to be some kind of record, Dennis! Glad the process was nice and easy and I hope they serve you well. Let us know if you do end up needing to go to the heavier duty yellow option as well, we always like to get real life experiences from people. : ) Any more trips planned for the year?

by:
2018 ford F-250 Super Duty
eTrailer made the choice easy by offering advise on options and applications. Installation was also quite simple, though the directions were a little too simple. However, I was able to determine once installed prior to final torque, that the top plate could be rotated to align the helper springs with the corresponding flat plate on top of the differential/axel perch. Honestly, with daily driving if there is a difference I cannot tell, which is a GOOD thing. My F250 Powerstroke diesel, like most others, unladen has a firm ride. I did not want it to be more so. My 2018 does not fit in my garage not even close. So outside 24/7 since purchase, the OEM bumpstops at all 4 corners needed to be replaced and I wanted to upgrade them. These are quality no-maintenance bumpstops, and did not require any additional spacers to fit properly with my 2-2.5 inch leveling spacers. Paired with the Timbren SES for the rear, my Super Duty is set for all of my needs, including light to medium hauling / towing, for the foreseeable future. A huge shout-out to all of the people I spoke with for both purchases - thank you for all of your advise and assistance!!! eTrailer will most certainly be a first-stop should I need help with anything else I may need from all of their other and quite expansive upgrades for my rig.
by:
I have a Workhorse W22 chassis. I installed steering dampeners and HD sway bar to reduce the "loose" steering. After installing the SumoSprings Front Spring helpers on the front end, 90% of the looseness on the front end disappeared. It is now a pleasure to drive. Very little sway from passing trucks and cross winds. I will be installing a set on the rear this year.
Claire H. profile picture
Etrailer Expert

Claire H.

7/6/2026

That is awesome to hear! It must be such a relief to not have to put so much energy into controlling the wheel while driving now.

by:
2018 Thor Freedom Elite Motorhome
I recently purchased/installed SumoSprings for the front axle on my 2018 Thor Freedom Elite 28FE. Having previously purchased/installed SumoSprings for the rear axle I have to say that the overall improvement in ride/handling has exceeded my expectations. As always, etrailer provided valuable insights and prompt inquiries to my questions. The level of in-depth product knowledge amongst the etrailer staff is second to none. Thanks etrailer!
by:
Ordering and delivery was quick and easy. The SumoSprings really improved the ride of our C Class RV. The only problem was one of the springs had cross threaded threads so I had to tap the treads to make it work. They were delivered in a plain brown box with no manufacture information or instructions. It makes believe the were a returned item, the previous purchaser couldn't get them to work either. I just had the tools and skill to correct the problem.
by:
2006 Dodge Ram Pickup
2006 Dodge Ram 3500 SRW 5.9 Cummins 4x2
Original bump stops were dry rotted and almost not existent. Very easy install. Took about 30 minutes. The Sumo springs are engaged all the time. This may be due to the truck being a 4x2? You can feel the front end is stiffer over bumps and dips of the road, which I feel is ok and not extreme. Towing the 5th wheel I feel the truck handles better than before.
by:
These Sumo springs (as well as the ones I purchased for the rear of my RV) installed easily, fit perfectly and do a great job reducing vibration and improving ride quality. Very pleased.
by:
2017 Mercedes-Benz Sprinter 3500
Installed front Sumosprings yesterday but have not driven vehicle yet. The front have full contact with the A-frames.
Should help with van side-to-side sway
.
Shopping around for a set to install on the rear as well.
by:
2022 Winnebago Navion Motorhome
I’ve made several purchases from eTrailer and have been satisfied every time! Recently bought front and rear Sumo helper springs. Installation was a breeze. They have helped reduce the side to side sway caused by wind, freeway traffic and rough roads. So far im very happy with them.
by:
2019 Chevrolet Express Van
Installed Sumo Springs on my 2019 Chevy 4500 motorhome, I was looking for ride improvement without breaking the bank. These days so many products are marketed well but never match the performance that was promised. That is not the case with Sumo Springs!!! I am very pleased with the ride improvement, sway is gone when transitioning from different levels of pavement and the shock of bumps is 50% better!! Installed myself on front and back in about 1 hour, front ended up about 3/8” higher after a couple days, got front end alignment done but didn’t need any adjustment. Finished a 400 mile road day today and my wife and I are very pleased. Excellent product!!
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

4/2/2026

That's awesome to hear, Edwin! Where did you head off to?

by:
these look like the perfect thing for my tired old helper springs, I put SumoSprings on my rear axel of my Jeep a year ago and the have made that ride much better hoping for the same with these.
by:
Mercedes-Benz Sprinter
Sumo springs greatly reduced body sway on my 2021 Mercedes Sprinter.
by:
2009 Winnebago Adventurer Motorhome
Have not had a chance to install yet but seem to be a lot better than what was on my RV. One thing I have noticed is the old part screws into a nut welded on the frame and the new SumoSpings bolt is to small to use the welded nut. So installation would be a lot easier if you could just screw it in.
by:
Sumo Springs really helped with the bumps in the front of the 2019 Ford E350 Winnebago! Very happy with them. Super easy install even though a bit awkward to reach the spot.
by:
Very easy installation. Would be nice if they were about 2” longer to get contact sooner but they were a good replacement for the hollow stock bump stops.
by:
Springs arrived on time without any damage. Installation was completed in about a half hour with a 10mm socket, 3” extension and ratchet to remove the stock bump block on our Ford E450. Then just thread the Sumo Spring in place of the removed block. This was the easiest upgrade I’ve done so far.
by:
Put these on a Sprinter and what a positive difference they made. One can still feel the poor shape of our roads but no more jarring as was the case before. Definitely worth it.
by:
toyota Tacoma
Springs are good, working well. My Tacoma is stock (no lift). With the front end jacked up and wheel/tires totally suspended I was not able to get the springs mounted. I had to cut off about 1/4 inch of threads to get them into position to screw then in. Once that was done everything was ok.
by:
gmc Sierra
Installation in a 2022 Sierra 2500HD was easy, used large Channel locks to remove factory, new ones popped in by blocking them with wood wedge while vehicle was jacked up and releasing jack quickly so all weight would come down at once.
Only have aprox 100 miles on new Bump Stops but ride feels smoother as they are engaged at rest, unlike factory that engage on bumps. Need more miles to fully review.
by:
2004 Workhorse W-Series
These Sumo springs were a great upgrade. So easy to install, less than 20 minutes.
Deborah profile picture

Deborah

4/20/2025

It was a great investment. It truly helped with the front end bouncing. I look forward to adding a set to the rear.

Jon G. profile picture
Etrailer Expert

Jon G.

5/5/2025

@Deborah Glad to hear it! Whenever you decide to throw some SumoSprings on the back of your 2004 Workhorse W-Series chassis you'll be looking for the Kit # SSR-280-54-1.
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See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Recommended Suspension Improvements For a 2022 Dynamax Isata 5 on Ram 5500 Chassis
    I find the best improvements for suspension systems on a motorhome like your 2022 Dynamax Isata 5 on a Ram 5500 chassis are the Front # RM55ZR and Rear # RM35ZR sway bars to help reduce body roll. And the Front # SSF-303-54 and Rear # SSR-309-54 SumoSrings to help provide support to the suspension and cushion road shock. Best of all these are all maintenance free parts so you do not have to worry about air bags getting a hole or air lines becoming damaged over time.
    view full answer...

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