SumoSprings Review For RVs: We Tried Them! Are They Worth It?

The most budget-friendly way to upgrade your camper's suspension system. Keep reading to learn more.

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You’re here because you want to know if upgrading your vehicle’s suspension with SumoSprings is worth the investment. If so, check out our complete SumoSprings review below.

SPOILER ALERT: SumoSprings are 100% worth it. SumoSprings drastically smooth out your ride, reduce sway, and give you more control as you drive on uneven terrain. For the price you pay, they provide fantastic value.

After a year of traveling in our camper van, we realized that driving on bumpy, backcountry roads just wasn’t enjoyable. In fact, it was flat out dreadful. Because our high-roof van is top heavy, we’d always end up rocking precariously back and forth as we navigated rough terrain.

Mind you, our camper wasn’t that heavy and the terrain not particularly rough, but our van’s suspension just couldn’t keep up with our adventurous spirit.

And you know what? Even something so innocent as driving across a speed bump at an unfortunate angle or taking a rough right turn onto a main road was enough to send our camper on a hysteric rock-a-thon.

So we installed SumoSprings to upgrade our campervan’s suspension.

One year later, we want to give you a full SumoSprings review and discuss how they’ve changed the feel of our drive. We will discuss everything from:

So whether you have a Ford Transit, Mercedes Sprinter, of Ram Promaster, if you’re looking to upgrade your vehicle’s suspension with SumoSprings, keep reading our review below!

What Are SumoSprings?

Comparison to factory bump stop - SumoSprings Review
Comparing SumoSprings to factory bump stop (Photo Credit: Mri Guy @ Amazon)

Simply put, SumoSprings are oversized bump stops that replace your vehicle’s factory-supplied bump stops.

In fact, our SumoSprings are over TWICE as large as the wimpy bump stops that originally came with our Ford Transit van.

Compared to factory bump stops, SumoSprings are:

Not only that, but SumoSprings are made from a proprietary micro-cellular material better suited to handle the added stress of a heavy RV or camper van.

Pretty cool.

Vehicle Suspension For Dummies (Very Quick)

Vehicle Suspension Basics
Vehicle suspension basics (Photo credit:

When talking about suspension, a vehicle is separated into two halves.

1. Main Body | This is the upper half of your van. This includes the front cab and the rear cargo area.

2. Chassis | This is the lower half of your vehicle and includes the metal framework and wheels below the main body.

If the main body and chassis were integrated in a single solid metal frame, we’d all be having a very rough, bouncy, and generally unpleasant ride.

So in order to smooth out the ride, a suspension system is built between the two halves. Suspension acts as a soft buffer to absorb the bumps and shocks taken by the chassis before that energy is directed to the main body. This gives you, the driver, a smoother overall ride.

Primary suspension parts typically include:

For the rest of our post, you do not need to know more than this regarding vehicle suspension.

But for more in-depth info about a van’s basic suspension system, check out this informative post from Sprinter Upgrades

The Problem With Factory Suspension Systems

Unfortunately, the factory suspension system that comes supplied with a van is inadequate for traveling in a camper van.

This is understandable because a van’s factory suspension is intended for commercial driving on nicely paved roads. Not for heavy camper vans wandering through the backcountry.

It would be like jogging on a sandy beach with flip flops.

Could you do it? Sure

It is a good experience? No

Running is much better with the right shoes.

“Ok, I get it. So now what?”

How Do SumoSprings Improve Suspension?

Factory bump stops only really exist for one purpose; to prevent your vehicle’s frame from  dangerously smashing into its chassis when you hit a serious bump in the road.

Nothing more.

Unlike the other parts of your vehicle’s suspension, these bump stops do nothing to improve your ride.

But by replacing factory bump stops with SumoSprings (aka: super-sized bump stops), you are now adding an additional product that contributes to your suspension system.

Absorbs Bumps & Shocks Earlier

SumoSprings comparison to factory bump stop - SumoSprings review
SumoSprings & factory bump stop distance comparison (Photo credit:

When you replace a factory bump stop with a SumoSpring, you’ll immediately notice that there’s much less air space between the vehicle’s body frame (top) and it’s chassis (bottom).

You can see this example in the above picture.

Good To Know: The exact distance numbers will vary depending on the weight of your vehicle.

Less airspace is a good thing.

It means your camper van’s body will travel less vertical distance before the SumoSpring picks up the weight and begins to absorb the impact from the chassis.

Lastly, the more a SumoSpring compresses, the firmer the push back. This means you get a strong, progressive absorptive cushion under your camper van’s body.

A More Stable Ride With SumoSprings

Because SumoSprings pick up your van’s weight earlier in the movement process, your van’s body ends up traveling less vertical distance than with a traditional factory bump stop.

This means your camper van experiences less:

Oh, Don't Forget About The Front SumoSprings

Front Coil SumoSprings For Camper Vans
Front Coil SumoSprings

Up until now, we’ve only talked about the rear SumoSprings that replace your factory bump stops.

But unknown to many people interested in upgrading their camper’s suspension system is that there are also SumoSprings for the front of your vehicle as well: Coil SumoSprings

Note: Mercedes Sprinters and several other models do not use Coil Sumo Springs. They use a similarly shaped oversized bump stop in the front. But most other vehicles, like our Ford Transit, use coil inserts in the front.

Unlike the rears, these Coil SumoSprings do not look like bump stops. Instead, this product conveniently fits itself inside a layer of the springs that surround your vehicle’s front struts.

In essence, these Coil SumoSprings support the front strut coil by preventing the spring from over compressing and are highly recommended when we spoke with SuperSprings staff; the manufacturer of SumoSprings.

"Engineering dept reported...that the front insert was really substantial in providing control in many real road environments just like their customers would encounter."

- Reply from SuperSprings International

Key Take Away?

If you can only pick one, go with the rear SumoSprings.

But adding the front coil supports is recommended.

SumoSprings Review: Are They Worth It?

Absolutely. 100x YES! SumoSprings significantly calmed our ride when driving across uneven terrain. Less side-to-side sway, smoother rides, and less jarring jolts. SumoSprings also helped our van regain the 3/4″ of clearance that we had lost due to it’s heavy weight.

Life Before SumoSprings

We drove our first 30,000 miles without SumoSprings and still vividly remember the very real hesitations we had when on uneven ground and bad terrain.

The list of “bad terrain” is seemingly endless and includes:

Of all the things related to a bumpy ride, the absolute worst are the side-to-side sways.

Nothing gets me to nervously grip my steering wheel harder than 5-6 deep, back-and-forth rocks before our camper van settles back down.

Now, Reduced Sway & Smoother Rides

With added suspension support from our SumoSprings, we are much more confident when driving on unmaintained roads.

Our rides are considerably smoother with less side-to-side way because the SumoSprings picks up the weight of our camper and dampens it’s overall movement.

And for roughly $450 (prices vary depending on the vehicle model), SumoSprings are some of the cheapest camper van suspension upgrades you can make that have an immediate and noticeable impact on your driving experience.

Best of all, SumoSprings are easy to install yourself. So you don’t need to pay an additional $500-$1,000 at an auto shop to get them installed.

We installed both the front and rear SumoSprings in less than two hours at a Walmart parking lot.

10/10 we would purchase SumoSprings again for a second camper van build. Except next time, we won’t wait 30,000 miles before improving our ride.

How To Purchase SumoSprings For Camper Vans

Before picking up your pair of SumoSprings, there are TWO VERY IMPORTANT things you need to know.

1. Three Different Colors (And Densities)

We describe the meaning of the different colors of SumoSprings below, but we think this video also does an excellent job!

Rear SumoSprings come in 3 different densities and each density is identified by a different color. The heavier your vehicle, the better off you are going with a denser material.

  • Blue (model #s ending in -40) are for lightweight vehicles and are not intended for camper vans.
  • Black (model #s ending in -47) are for medium and heavy vehicles
  • Yellow (model #s ending in -54) are for heavy vehicles

In our Ford Transit: Our camper van weighs ~8,000lbs and we were recommended to go with the medium density (Black color) springs. Though the yellow model SumoSprings are most commonly purchased, they should really only be used for extremely heavy vehicles and tows.

If you select the yellow SumoSpring but your vehicle’s overall weight isn’t heavy enough, you may end up with a firmer ride than you anticipated.

If you have a camper van or RV we suggest you to NOT choose the Blue (least dense) SumoSprings.

Finally, Coil SumoSprings for the front only have one density: Black

2. SumoSprings Are Vehicle Specific

SumoSpring products are generally NOT interchangeable between vehicle types. This is because each vehicle’s size and specs are a little different.

Therefore, let us help you select the proper SumoSprings for your camper van.

Select The Correct SumoSpring For Your Vehicle

MakeModelTypeTypeModel #Buy
FordTransitRearSumoSprings (Black)SSR-121-47Amazon
FordTransitRearSumoSprings (Yellow)SSR-121-54Amazon
FordF-250/350RearSumoSprings (Black)SSR-127-47Amazon
FordF-250/350RearSumoSprings (Yellow)SSR-127-54Amazon
FordF-250/350FrontSumoSprings (Black)SSF-111-47Amazon
FordF-250/350FrontSumoSprings (Yellow)SSF-111-54Amazon
MakeModelTypeModel #Buy
Dodge RamPromasterRearSumoSprings (Black)SSR-313-47Amazon
Dodge RamPromasterRearSumoSprings (Yellow)SSR-313-54Amazon
Dodge RamPromasterFrontCoilSpringsCSS-1195Amazon
DodgeRam 1500RearSumoSprings (Blue)SSR-307-40Amazon
DodgeRam 1500RearSumoSprings (Black)SSR-307-47Amazon
DodgeRam 2500/3500RearSumoSprings (Black)SSR-312-47Amazon
DodgeRam 2500/3500RearSumoSprings (Yellow)SSR-312-54Amazon
MakeModelTypeModel #Buy
MercedesSprinter (2500)RearSumoSprings (Black)SSR-330-47Amazon
MercedesSprinter (2500)FrontSumoSprings (Black)SSF-106-47Amazon
MercedesSprinter (3500)RearSumoSprings (Black)SSR-338-47Amazon
MercedesSprinter (3500)RearSumoSprings (Yellow)SSR-330-54Amazon
MercedesSprinter (3500)FrontSumoSpringsSSF-106-47Amazon
MakeModelTypeModel #Buy
ToyotaTacoma (2016-2020)RearSumoSprings (Blue)SSR-612-40Amazon
ToyotaTacoma (2016-2020)RearSumoSprings (Black)SSR-612-47Amazon
ToyotaTacoma (2016-2020)FrontSumoSprings (Blue)SSF-604-40Amazon

SumoSprings FAQ

Get answers to the most commonly asked questions below.

Do SumoSprings Really Work?

Heck yeah they do! SumoSprings remove much of the unwanted bumps, jolts, and sways from your ride. Picking up a pair of front and rear SumoSprings will do wonders to improving your ride and enjoying your travels when on uneven terrain.

Are SumoSprings vehicle/model specific?

Yes. Whether you are driving a Mercedes Springer, Ford Transit, Dodge Promaster, or any other vehicle you will need to find the specific SumoSprings model for your vehicle. We make several model recommendations in the above table of our SumoSprings review based on which vehicle you are driving.

Do I have to purchase BOTH front and rear SumoSprings?

No, it is not required to purchase both front and rears. If you can only get one, get the rears. But the sales representative that we spoke with highly recommended us to purchase both the fronts and the rears for the best suspension results.

Will SumoSprings Increase My Ground Clearance?

Yes & no. SumoSprings may help you regain any ground clearance you may have lost due to having a heavy camper van. But they will not help you achieve any higher clearance then when your vehicle first came off the factory line.

In our case, our Ford Transit regained roughly 3/4″ of clearance after installing our SumoSprings.

But this was due to our front Coil SumoSprings helping to relieve weight pressure off our front strut springs and had nothing to do with our rear SumoSprings.

How Long Do SumoSprings Last?

SumoSprings are backed by a lifetime warranty from the manufacturer. They do not leak air, don’t require compressors, and don’t require any maintenance whatsoever. They just work.

Are SumoSprings Good For Towing?

Yes, they are! Because SumoSprings help support heavier payloads by reducing squat and sway, these helper springs are a perfect answer to help manage your ride when towing large, heavy objects behind you.

SumoSprings vs. Timbrens: Which Are Better?

To be honest here, we have never tried Timbrens. Although we’ve read users generally prefer SumoSprings instead, especially among the RV and campervan community.

But if you’re looking for a decent comparison check out this post from TruckSpring.

How To Install SumoSprings On Your Camper Van

We had no previous SumoSprings experience and it took us about 2 hours to install both the rear and front SumoSprings.

And we went pretty slow.

This video from Carey On Vagabond does an awesome job at explaining the installation process for both the rear and front SumoSprings on their Promaster camper van.

Want to build a camper van? Check out our
DIY Camper Van Build Guide

Final Thoughts: SumoSprings Won't Dissapoint

Dollar-For-Dollar The Best Vehicle Suspension Upgrade You Can Make Right Now

For the most cost-effective camper van suspension upgrade, we think purchasing a pair of front and rear SumoSprings are the best way to go. They’re not expensive, easy to self-install, and dramatically change the feel of your ride.

Whether if you’re looking to get SumoSprings for your Sprinter, Promaster, or Transit, we say just stop thinking about it and pick them up today. You won’t regret it.

These are some of the best camper suspension upgrades you can make right away to improve your ride.

We hope you enjoyed our SumoSprings review.

If you have any specific questions about our experience with SumoSprings, please let us know in the comments below.

Happy driving!

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