SuperSprings Custom Suspension Stabilizer and Sway Control Kit
Item # SS94VR
Retail:$567.01
Our Price: $534.99
You Save: $32.02
Confirmed to Fit
1999 Ford F-350 Super Duty
4 Wheel Drive Models
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1999 Ford F-350 Super Duty - SuperSprings Custom Suspension Stabilizer and Sway Control Kit
- Leaf Springs
- Rear Axle Suspension Enhancement
- Light Duty
- SuperSprings Intl
1,400-lb Capacity. Upgrade your rear suspension by installing these helper leaf springs above your Ford F-350 Super Duty's factory leaf springs. They significantly reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads.
Features:
- Reinforce your vehicle's rear suspension with extra leaf springs that prevent sagging and reduce sway by up to 30 percent
- Work like sway bars to stabilize your OEM springs and keep them from twisting
- Compensate for windy conditions, wind turbulence from big rigs, and weight shifts from cornering
- Lift your truck when you are carrying a heavy load and prevent bottoming out
- Adjust automatically to your payload
- Rollers on each end of the SuperSprings activate when the OEM springs flex under load
- Rollers deactivate when OEM springs aren't under load
- Can be customized - the shackles attaching the SuperSprings provide several options for installation
- Choose a setting that increases load support and ride height for constant heavy loads or to compensate for minor spring fatigue in an older automobile
- Choose a setting that maintains the original factory ride conditions and minimizes effect on unloaded ride quality and height
- Choose a medium setting that balances support, height, and ride comfort
- Install easily - bolt on above your existing factory springs with no drilling required
- For some models with factory springs that sit above the axle, the included poly spring pads prevent shifting
- Dense polyurethane blocks seat between the top of the factory springs and the underside of the SuperSprings
- Require no maintenance - no tubing or air pressure to monitor or adjust like air springs
- Extend the life of brakes, tires, and factory suspension
- Made in the USA
Specs:
- Weight capacity: 1,400 lbs
- SuperSprings will not increase your vehicle's weight-carrying capacity
- Limited lifetime warranty
- 30-Day satisfaction guarantee
These additional leaf springs add support and sway control to your existing OEM suspension. Just bolt on SuperSprings over your existing factory springs, and they automatically work when you need them. As the factory spring flexes, a roller at each end of the beefy helper spring reacts to engage the helper spring and to provide extra support. The springs help to better distribute cargo weight throughout your existing suspension, channeling that weight to the points on the frame that are designed to support heavy loads.
Placing these leaf springs above your factory springs helps to keep your OEM springs from twisting, so the SuperSprings act like a sway bar, reducing the body roll that makes driving more difficult and dangerous. With these helper springs, driving is safer and easier when it's windy, when your vehicle is rocked by a passing semi, and when you are cornering. The springs help to reduce sway by up to 30 percent. SuperSprings also allow more wheel travel in the rear suspension when they are under load, so they maintain traction and ride comfort better than rubber or polyurethane bumpers. That means they're great for drivers who frequently tow.
You can also customize the level of support provided by SuperSprings. For most models, the shackles that attach the helper leaf springs to your existing leaf springs have several installation options:
- For greater support and ride height when your suspension is under a constant load or if you have an older automobile with some spring fatigue, install the helper springs using the upper bolt holes
- To maintain the factory ride and reduce the effect on your ride height, install using the lower bolt holes
- To balance support, height, and ride comfort, install using the upper hole on one end and the lower hole on the other
SuperSprings are a maintenance-free, low-cost alternative to air spring systems, which require constant monitoring and air pressure adjustment. These helper leaf springs respond automatically to the load you carry, so there is no crawling under your truck to adjust them. You'll also reduce wear and tear on your suspension, brakes, and tires, which saves you money. The bolt-on installation means that they are easy to fit - no drilling required.
SSA40 Super Springs Leaf Spring Suspension Enhancer - Anti Sway
Installation Details
Customer Reviews
SuperSprings Custom Suspension Stabilizer and Sway Control Kit - SS94VR
Average Customer Rating: 4.6 out of 5 stars (233 Customer Reviews)
1,400-lb Capacity. Upgrade your rear suspension by installing these helper leaf springs above your vehicle's factory leaf springs. They significantly reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads.by: Mike03/19/2023
No issues with install on a 2023, E350 Class C motorhome.
After chalking the front wheels, I used two 3 ton floor jacks with 13” 6x6 blocks just behind the springs to lift the frame and rear tires off the ground to remove the wheels. For safety, 3 ton jack stands were put under the axles during spring installation
After installing the springs per manufacturer instructions, two 1/2” x 10” pieces of all thread with drilled flat bar were used to compress the front end spring.
With the least amount of preload it raised the back a good inch.
The 800# trailer tongue weight will be the next test to see if more preload is needed for a level ride height.
by: Howard10/24/2019
The Super Springs work great! I pull a 8,500# trailer with a hitch weight of 950# with a 2004 GMC Sierra 1/2 Ton. The truck pulls fine but even with an equalizer hitch still had some sag. The Super Springs were easy to install and leveled the rig. After a year everything still works great.
by: Chris11/21/2013
I got this to prevent bottoming out my truck when towing our travel trailer. Won't know for sure if this actually works until we load up. Having said that, the instructions provided with this are poor and talking with Supersprings tech support was frustrating. As mentioned elsewhere, you will need two "C" clamps to pre-load the spring and I wound up fabricating a 3" extension bracket for the brake lines; neither of which were mentioned in the instructions. I also removed the wheels to provide working space and air tools are definitely the way to go. On my '13 Tundra, the distance between the stock spring pack straps is 40" the same as the distance between the eyes on the Superspring. I was advised that the spring is mounted off-center to avoid conflict with the stock spring straps; however this in not mentioned in the instructions. This placed the Superspring about 4" forward of the center of the axel instead of centered on the axel. (see photos) This seems counterintuitive to me but we'll see. This added 1.5" in height to the rear of the truck. It took me 4 hours to install by my self, including time to fabricate the brake line extensions and dealing with Supersprings staff twice on the phone. During the second call, the tech mentioned that they get a lot of phone calls for Tundra installs, indicating to me that they already know there are issues with the product and instructions. In retrospect, I would look for a new spring pack if I was doing this again. Hopefully my suspicions are unfounded but I'm hanging on to the box just incase. Etrailer was great with the best price anywhere and quick shipping.
by: Rich08/20/2020
Installed on a 2016 Toyota Tundra. I pull a 28 foot aluminum frame utility trailer. Hauls like a 3/4 ton with super spring. Rides like 1/2 ton without load. I have put 1 ton load on truck with no trailer and the truck drove fine. The front of truck at tires rose 1/2 inch. Installation requires the frame to be lifted off the axel.at rear of vehicle. I like this system better than air shocks as there is no adjustment after installation. I would purchase again.
by: JR04/16/2024
Added these springs to my 2500 Silverado to prepare for a slide in camper. They made quite a difference. I did it myself, but two people would be easier. The ride is naturally a little stiffer when empty, but that's the trade off.
by: David A12/27/2023
Great product, very clear instructions. I really appreciated the stickers on each spring showing the correct orientation, that took all of the guess work out of it.
Thanks Supersprings for making a great kit and confirming the product would work with the airbags I had installed.
by: Timothy02/08/2019
The kit looks really good but I can’t figure out how to install. Enclosed are two photos showing my van suspension and the parts your sent. The instructions do not show my van with only one spring. Can you advise?????????????? Thanks.
by: Greg07/09/2021
This was by far the easiest mod I have made to my 2019 Ford Super Duty King Ranch! Only took 45 minutes start to finish. Didn't even take the wheels off. Took some pressure off of the springs by lifting the rear end a little using the trailer hitch. Used the bottom holes on both ends and only raised the rear of the body 1 inch. Great product!
by: Gregg04/24/2020
Product worked as described. Shipping was quick (etrailer used "air" to my state, then on UPS truck)
Easy to install, not sure why they included 2 sets of polyurethane blocks (only one set fit my truck)
Don't notice any ride difference when set at lowest setting. Raised truck approximately 3/4". East to readjust for more preload if needed.
Combined these Super Springs with Timbren load handlers. So far so good.
Great improvement over stock while maintaining ride quality.
by: Ken 04/11/2024
i have these on a couple of trucks and they work great.more reliable than air bags
by: Joseph 12/30/2023
This helped immensely with the wondering in the steering of my e350. The shop that I had install it has been recommending this to their customers
by: Jonathan05/31/2019
E-trailer agent James helped find trailer tow package that fit my 2011 Ford Transit Connect and provided appropriate install video. You're a huge help James. The install went smoothly without a hitch (lol).
by: John10/12/2023
I am 100% pleased with etrailer...received wrong suspension because of manufacturer's misrepresentation...Tiffany at etrailer corrected everything...sent a prepaid UPS label to send it back...sold me the proper stabilizer springs...and gave me 100% credit back on the wrong purchase...these people are true to their word and I recommended them to everyone...P.S. today I installed the new stabilizers and they work like a charm...and...I talked to Tiffany on Monday the 9th...received the new stabilizers on Wednesday the 11th and installed them on Thursday the 12th...10 thumbs up to Tiffany and etrailer...thanks,
by: Gary 08/23/2023
SuperSprings were a great addition to our van. Sway control improved immediately with the SuperSprings. The process to install SuperSprings was moderately challenging but my son and I got them installed at home. Purchasing a set of C-clamps made it possible. Definately worth their price!
by: Owen03/02/2024
Pretty sweet. Immediate and noticeable improvement for my sprinter conversion. Disappointed I waited so long to install.
by: Ted 10/10/2017
These springs improved the ride considerably , less roll on corners with the slide in camper on and wheel hop on rough roads . In general the handling was much improved.
by: Mike L07/23/2021
Had a pro install them to the center hole like Manufacturer suggest, rides a little firmer which I like not sloppy, Have not towed yet but looking forward to it! Great products and fast shipping.
by: Phillip10/16/2019
Overall, the installation of the SuperSprings kit went pretty well. The instructions sent with the kit were not all that clear, but the info on etrailer's website saved the day. Can't wait to put the camper back on the truck and see how it rides!
by: Richard W02/07/2020
I bought this item for my 20 year old 37' motor home. Over the years the rear end has "squatted" down some and due to the weight of the frig, washing machine, and a small freezer all being on the passenger side, it was lower on that side. Installation was not the easiest thing, but this 70 year old was able to do it by myself, even on a gravel driveway. Installation instructions are good. Besides the drive axle, my rig has a second, "drag" axle, whose tires I had to remove to do the job. I also had to re-route a propane line. The hardest part was Step 7: "Using a heavy duty C-Clamp or SuperSprings installation tool, pull down rear of SuperSpring and install bolt,..." I used 2 C-Clamps and it was pretty tricky. I'm not sure what the price of their special tool is and I don't think etrailer sells it. I used the bolt hole that gave me the maximum lift on the passenger side and the first hole on the driver's side. The completed installation did accomplish my goal of leveling the motor home. These springs are really heavy-duty and very good quality. I have no complaints.
by: Thomas08/24/2018
After having used partial and full ‘add-a-leaf’ kits on fleet trucks in the past, I was willing to give these a try.
Having missed the stiffness of a 2500 rear end and having put 125k on a 1500 with a topper/camper shell, this was the progressive stiffness I was looking for.
The vehicle sits 1.5” higher at the rear, isn’t overly stiff, alowing the Bilstein shocks to continue to do their job, properly. Adding the tow behind camper, along with a loaded bed, far less body sway without a compromised ride.
I also utilized the SumoShocks (front and rear), for some time and I love them. Having everything together, as a package, works great for me when towing, the bed is loaded down and when I’m traveling 2hrs at a time from place to place, as a highway truck.
This will take some serious C clamps (8” from hardware store) and some mechanical aptitude if using a jack and stand(s) in the garage. Overall, not too strenuous or hard. Nothing intimidating.
I’d definitely recomend to anyone wanting to help tired leaf springs or when reducing body roll.
by: Conrad 08/18/2020
If you watch the video on installation from the model - SSA13MXKT, you will see how to install them, that's why I don't have any pictures. It took me about 2-1/2 hours to install. The brackets were a plated color and I painted everything black before installed them. My truck was pretty clean underneath so I think they look better. I installed them on a 2019 GMC Denali HD 2500 Duramax. As far as handling, after the install, I did not notice too much difference empty. But - when I had my 5th wheel hooked up, there was a difference, not a significant amount, but a difference. My pin weight on the trailer is roughly 1,350 lbs. also. Now for the dimensions here is what I got - I would say, these dimensions are within an 1/8". The dimensions were taken from the center of the tire to a line on the truck, front and rear.
BEFORE INSTALL -
Rear - 43"
Front - 40-1/8"
AFTER INSTALL -
Rear - 44"
Front - 40-1/16"
WITH MY CAMPER HOOKED UP
1,350 lbs. Pin Weight (CAT Scale Certified)
Rear - 42-5/8"
Front - 40-1/8"
As you can see, it dropped the truck down 1-3/8". Before the install my truck would "squat" approximately 2-1/2" So, they made a big difference, an 1-1/8" difference. Before the install, the front was about (I never got a good measurement on that) 41".
by: Jack 06/03/2023
They increase the carrying capacity of the stock springs by adding an additional leaf. We drive our van with most of the load above the rear suspension and it was bottoming out on occasion. Works as advertised; no more bottoming out! It is a bit of a struggle to install, so a professional may be needed
by: Dave03/20/2021
Just put on super springs 2019 f150 for towing a camper that is awful in wind. The installation was easy. Hoping the springs help with a stable ride. I will update when I get the camper out of storage.
by: Chris03/11/2022
The spring system itself is a great product, but I’m using these on a 2021 F-150. In 2021 ford went to a mono spring design that has less arch in its resting state. I called superspring prior to ordering to verify this was the correct product and was told this was the one. After installation the springs walked all over the place under normal driving conditions and had to be constantly removed and re-situated. I’ve since had to use industrial glue to attach the spring to the rubber block that it rests on and that has solved the movement issue but in my opinion this is something that should not need to be done if the product was actually made for my vehicle. however, from a functionality standpoint they work well once they are actually held in place.
by: Hans04/18/2023
The Supersprings part went find, installed as expected. Only thing for my RV type had to remove the tire. The front SuomSpring did not go as it should. The bolts are the same size as the holes in the frame. Had to really drive it in. I have a 2006 Pleasure Way Class B RV. Had to remove a few other items first to get it all to fit.
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See what our Experts say about this SuperSprings Intl Vehicle Suspension
- SumoSprings Kits that Fit 2023 Entegra Odyssey 24 BYes you can add the yellow SumoSprings kits for your 2023 Entegra Odyssey 24 B with the part # SSF-111-60 for the front and the part # SS94VR for the rear. The rear set is a leaf spring style as there isn't a jounce spring option available at this time.
view full answer... - SuperSprings For a 2023 Ford F-250 Built After January 1stFor your 2023 Ford F-250 built after the 1st of the year you have a few different option SuperSprings. You will want to select the correct system based on the amount of weight you intend to carry. 1,400LB # SS94VR 2,500LB # SSA22 3,400LB # SSA25 The 3,400lb kit is recommended for applications which constantly carry heavy loads such as trucks with contractor beds installed.
view full answer... - SuperSprings SumoSprings For a 1997 Ford E-350 Cutaway Van ChassisSuperSprings offers their SumoSprings in either the 500LB # SSF-106-40 or 1,000LB # SSF-106-47 for the front of your 1997 Ford E-350 cutaway chassis. While they do not have a SumoSpring for the rear the suspension they do have their Stabilizer and Sway Control Kit in either a 1,400LB # SS94VR or 2,500LB # SSA22 kit. While these do not offer the progressive cushioning like the SumoSprings they do greatly increase stability and will help to reduce rear sway. I recommend using the heavier...
view full answer... - Will SuperSprings Fit 2013 Ford F-250 or F-350 Without Factory Overload SpringsI checked with the manufacturer, SuperSprings, for you and each of the SuperSprings kits will fit your 2013 Ford F-250 or F-350 Super Duty that does not have factory overload springs. These are an excellent upgrade to your suspension because they have so many benefits; the SuperSprings will help level out your truck, reduce sway, and give you better handling with the support it adds to your rear suspension. The only thing you'll need to do is pick the correct option for your application...
view full answer...
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Updated by:
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