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FITS 2010 Fleetwood Bounder Motorhome
SumoSprings Solo Custom Helper Springs - Front Axle

SumoSprings Solo Custom Helper Springs - Front Axle

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Vehicle Suspension
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2010 Fleetwood Bounder Motorhome

33U - Workhorse

35E - Workhorse

35H - Workhorse

35J - Workhorse

38P - Workhorse

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Call etrailer.com at 800-298-8924 for expert service. We are your Fleetwood vehicle suspension experts, and offer a lowest price guarantee. etrailer.com carries a complete line of SuperSprings products for your Fleetwood Bounder Motorhome 2010. SumoSprings Solo Custom Helper Springs - Front Axle part SSF-280-47 from SuperSprings can be ordered online at etrailer.com. Complete vehicle suspension installation instructions and technical support.
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2010 Fleetwood Bounder Motorhome - SumoSprings Solo Custom Helper Springs - Front Axle

  • SuperSprings
  • Jounce-Style Springs
  • Front Axle Suspension Enhancement
  • Light Duty

1,500-lb Capacity. Upgrade your Fleetwood Bounder Motorhome'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.


  • Helper springs upgrade your vehicle's front suspension for improved driver control and comfort
    • Support heavy front-end 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
  • Durable 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): 1,500 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • 2-Year limited warranty

Front Suspension Support

A heavy front load can cause front-end sag as your factory suspension compresses under the weight of the load. This means that the front 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 rear axle, your rear 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 front 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 rear 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.

SSF-280-47 SuperSprings Sumo Springs Solo Front Fleetwood Bounder Motorhome Suspension Kit

Replaces SSF-280

Item # SSF-280-47

Installation Details SSF-280-47 Installation instructions

Video of SumoSprings Solo Custom Helper Springs - Front Axle

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for SumoSprings Solo Custom Helper Springs Installation - 2006 Fleetwood Bounder Motorhome

Today our 2006 Fleetwood Bounder motor home, we're going to be taking at and showing you how to install the SumoSprings Solo Custom Helper Springs for the front axle. That's going to be part number SSF-280-47. Here's what our helper springs look like once we have them installed. These are going to greatly improve the handling of our motor home, as well as making our ride more comfortable, because they're going to support our suspension and help out carrying all that weight and prolong the life of it. It's also going to absorb a lot of the bumps and road shocks as we're driving down the road. So it's going to be a lot more comfortable.

One thing I really like about our helper springs, is that once they're installed, they're completely maintenance free. We're not going to have to worry about adjusting air pressure or running air lines like you do with air bags.I do want to mention that we have our motor home lifted so the suspension is hanging down and there's quite a big gap right here. Whenever we lower it back down to the ground, our helper spring is going to come in contact with the leaf spring, and that's going to take a lot of that weight and absorb a lot of that shock. Our springs are going to be a progressive rate spring, which means when we have a soft load or no extra weight, it's going to have a soft engagement and compress slightly, but the more weight we add or the more pressure is added to it, it's going to compress and get stiffer, and it can compress up to 80%. Now although it's going to compress up that much, it's not going to expand out to the side.Our helper springs are designed to replace our factory jounce stops.

So they're going to be independent from each other on side to side. Now that's going to help out a lot whenever we have an off center load, because it's going to compensate for that and they're each going to compress the appropriate amount. But at the same time, if we take an invasive maneuver and turn sharply, this is going to help keep it more stable, and we're going to lose some of that body roll and just kind of floaty feeling when we're going down the road.The springs themselves are going to be made out of microcellular urethane, so they're going to withstand most automotive chemicals like oil, gas, as well as road salt, and UV rays. Our springs are going to have a 1500 pound weight capacity, but keep in mind that these are not designed to increase the pay load of your vehicle, they're just there to help support the weight. So now that we've seen what they look like and gone over some of the features, let's show you how to get them installed.To begin the installation, you want to lift up the motor home so that there's going to be a gap in between the top of the leaf spring back here and the frame.

We'll find our factory jounce stop. It's going to be right above the leaf spring, and we're going to remove this. In order to remove it, we're going to need to twist the jounce stop to break it lose. On the inside of the frame, the nut is going to be in the very center right where our jounce stop is. So we can take a 9/16" wrench and we're just going to feed it in the frame, and then we'll turn the jounce stop while we're holding the nut.

Then we'll turn the jounce stop that's going to unscrew it from the nut. You want to unscrew it until it completely comes off. Then you reach up into the frame, and we're going to pull off a flat washer and a nut.So now we can grab our new spring, and the hardware we're going to be using, it's going to have a new flat washer and a new nut. So we'll remove those two, and we're going to slide the stud into the hole that we removed our factory jounce stop, and then secure it on top of the frame using the washer and nut. We'll take our jounce stop, and I'm going to push it all the way up into the frame and then reach in, put the washer in place, and then I'm going to hold the nut with my hand while I turn the jounce stop just to get it started. It is a tight fit. You'll have just enough room to get your hand in there to start the nut onto the stud.And once it's started, we'll grab a 13 millimeter wrench, and we're going to hold the nut while we spin the jounce stop to tighten it up. I'm just going to turn this and tighten it up so it sits all the way against the bottom of the frame. Should be able to just wedge your wrench in there, so it'll hit the side of the frame so we can continue to tighten it up. Once you have it nice and secure, we can pull the wrench off and we're going to repeat that same process on the other side. That'll finish up your look at the SumoSprings Solo Custom Helper Spring for the front axle, part number SSF-280-47 on our 2006 Fleetwood Bounder Motor Home.

Customer Reviews

SumoSprings Solo Custom Helper Springs - Front Axle - SSF-280-47

Average Customer Rating:  4.7 out of 5 stars   (416 Customer Reviews)

1,500-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.

- SSF-280-47

Finished installing somo springs and rear antiswaybar couple of days ago. Products seem to be of excellent quality and installation was relatively easy. Have not been able to get out on the road due to Covid-19 but hopefully will be able to travel in a couple of weeks. 800705

- SSF-280-47

Product arrive on time A+ 797765

- SSF-280-47

Noticeable improvement in the stability of the RV. I found the instruction difficult to follow, but got it done. No regrets 759132

- SSF-280-47

Installed on workhorse w22 . Helped on that sway on turns and harsh bumps. They work well. 718436

- SSF-280-47
2008 Workhorse W-Series

Ordering is always simple at etrailer.com with a very helpful product fit guide. Received product in about a week which fit my plans well. I installed the Sumo front springs and just finished a 200 mile trip from Southern CA to Central CA over our well funded and maintained highways....NOT! We have made this trip more than 20 times and this time we really noticed a difference in ride quality. I can’t wait to get the rear springs next. 661288

- SSF-280-47

One year and 8,000 mi since I installed the Sumo's on the front of my 34 ft Coachmen class A motorhome with a W-22 chassis. Still one of the best suspension modifications I have done to my coach. Great improvement on bridge joints and small pot holes. 654804

- SSF-280-47
2006 Workhorse W-Series

Adding the SumoSprings to the front of my W24 motorhome improved the ride over some of the worst roads I have seen in PA. and NY. 647067

- SSF-280-47

Sumo springs helped the ride. 606977

- SSF-280-47

I installed a pair of these on my Newmar Kountry Star a year ago and I am really impressed with the improvement they made. After installation my motorhome is barely affected when I am passed by tractor trailers. Before the installation of the SumoSprings I was always fighting the wheel when I was being passed by large trucks. 278059

- SSR-338-54

Review from a similar SumoSprings Solo in Vehicle Suspension

Not only are the products sold by etrailer great quality but the prices and service can't be beat. One of the best places to shop online 759089

- SSR-130-54

Review from a similar SumoSprings Solo in Vehicle Suspension

SumoSprings really improved the ride on my 2018 Thor Axis 24.1 It is much easier to drive the twisty roads in the mountains with this product because the motorhome does not lean as much. 610794

- SSR-209-40

Review from a similar SumoSprings Solo in Vehicle Suspension

Installed in 10 min. Easy install.Have not tried them yet.Boat is at the dealer.Will know when I pick it up. 692446

- SSR-117-47

Review from a similar SumoSprings Solo in Vehicle Suspension

Went from air springs to these and much more happier with the ride and simplicity of these over the air bags. 735203

- SSR-307-47

Review from a similar SumoSprings Solo in Vehicle Suspension

On a 2015 Ram 1500. The Sumo springs work great. I went from a loaded ride height of 35 inches to 36 1/4 inches. But the real improvement is in the ride. No longer have the squishy rear end wobble that I used to have. Combined with my weight distributing hitch my ride height improves to 37 1/2 inches. Truck is level along with my travel trailer. When I'm not loaded I don't even notice that I did anything. Still rides like factory. My only complaint is in the installation. Eight nuts with washers per spring and there is no space at all on multiple nuts to fit a so met or even a ratcheting wrench. Took about an hour in my driveway. Other than this minor inconvenience, I have to say excellent product. 347254

- SSF-106-40

Review from a similar SumoSprings Solo in Vehicle Suspension

Super fast shipping and delivery. Had them installed this morning and we're enjoying a better ride with less sway in cornering and curb transitioning. Installed on a Sprinter chassis, B+ touring van. 668030

- SSF-106-40

Review from a similar SumoSprings Solo in Vehicle Suspension

These were perfect for our E450 Dynamax Class C motorhome. They really enhanced the ride and handling. I would definitely purchase again. 718740

- SSR-210-40

Review from a similar SumoSprings Solo in Vehicle Suspension

They really make a difference. I have a truck load of tools and was it really noisy hitting bumps etc. They are a must have! 612257

- SSR-117-47

Review from a similar SumoSprings Solo in Vehicle Suspension

Excellent addition to the truck and easy to install. Greatly reduces squat when pulling the RV and eliminates rear end hop when going over bumps with no load. 756809

- SSR-130-47

Review from a similar SumoSprings Solo in Vehicle Suspension

Installing these babies in the morning. Very pleased with this product. 707679

- SSF-106-47

Review from a similar SumoSprings Solo in Vehicle Suspension

Can’t eat Etrailer products and service 559621

- SSR-209-40

Review from a similar SumoSprings Solo in Vehicle Suspension

I Received the SumoSprings Solo Custom Helper Springs shipment today and installed them on my 2017 Chevy Silverado 1500 standard cab long bed truck. It took about 30 minutes to install the helpers springs. I watched the install video and read the installation instructions on the etrailer website while waiting for the shipment to arrive. They were easy to install without jacking up the truck, I laid flat on my back and slid under the truck on my garage floor and had no problems at all. After installation I hooked up my 20 ft travel trailer and went on a test drive. The helper springs made a big difference and gave a more solid stable performance with the truck while towing my 5,000 lb travel trailer. I've installed airbags on previous trucks and I believe for the money and easy installation this is the best option to improve towing performance. 725590

- SSR-610-40

Review from a similar SumoSprings Solo in Vehicle Suspension

Purchased for a Tacoma 4 dr, long bed, with a fiberglass cap. I have the TSB/recall replacement spring pack. With this set up I had a decent ride, and better support over the OEM springs, but still see that the springs provided only minimal improvement when loading in the bed say 300-500#. If so loaded (camp gear, MC gear, 2-3 persons in cab) on moderate unpaved roads the OEM springs were at max load and had we too much frame sag. WITH the addition of the SumoSpring kit I found my truck when UNLOADED handled the same, but did have less body roll in the rear. At rest the frame rail is just touching the SumoSpring and wheel well to ground is 36 1/2" with P245 tires. When LOADED as detailed above, the rear feels firmer, has less body roll, and does not sag to excess like the OEM spring pack. Very satisfied with results. A very nice enhancement at a excellent price point. Kit is simple to install and should require no regular service/adjustment. 353831

- SSR-307-47

Review from a similar SumoSprings Solo in Vehicle Suspension

The SuperSpring Solo work as advertised. They definitely help level the load when pulling my 27' camper. My only complaint is that they fit so tight (1/4" gap) between the bottom of the SuperSpring and the axle that as soon you load anything you are already using the SuperSpring. I would have preferred a little more of the oem suspension for day to day driving. 660605

- SSR-307-47

Review from a similar SumoSprings Solo in Vehicle Suspension

This product does what it says it will do. One of the issues that I have is the difficulty to install this product. The 2020 Ram 1500 on the passengers side has a stabilizing bar that interferes installing all the nuts on the rear of the mounting plate spring. My truck supposedly has a 1 inch lift from the factory (Big Horn North Edition). I used the plastic extension as recommended in the installation instructions and even with the 1 inch factory lift, using the plastic spacer makes the spring rest on the rear axle with no load in the truck. I'd recommend to not install with the plastic spacer. The ride is much stiffer but I'm OK with that as when my trailer is attached the ride is as expected. 764466

- SSR-313-47

Review from a similar SumoSprings Solo in Vehicle Suspension

Sumo Black part no. SSR-313-47, 1500lb @50% compression. Installed on Ram ProMaster 3500 RV conversion van. Approximately 85% of the swaying has been eliminated but still retained the soft to firm ride. 661405

Show More Reviews

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Info for this part was:

Updated by:
Tricia G
Updated by:
Mary E
Expert Research:
Jameson C
Installed by:
Cole B
Video Edited:
Chris R
Video by:
Jonathan Y
Test Fit:
Robert C

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