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Heavy trailers, campers, and bed cargo can make the rear end sag and throw off your ride height. The SuperSprings Custom Suspension Stabilizer and Sway Control Kit adds up to 1,650 lbs of extra rear suspension support using bolt-on helper leaf springs that mount over your factory springs. They automatically engage when your suspension flexes under load to lift the rear and prevent bottoming out, keeping your truck level and steering steady when towing or hauling.
These helper springs adjust automatically to your payload without needing air lines or manual adjustments. As the factory springs flex, rollers at each end of the SuperSprings engage to add support right when it’s needed, then back off when the load is gone so your unloaded ride stays close to stock. The design spreads weight across the frame points built for heavy loads, improving comfort and stability without maintenance or added complexity.
When crosswinds or curves push you around, these helper springs act like a sway bar to reduce body roll by up to 30 percent. They keep your factory springs from twisting under weight shifts, making highway towing or mountain driving more controlled and predictable. You’ll feel less rocking when semis pass by and more confidence cornering with a full load.
Different bolt holes on the shackles let you tailor how much support you get. Use the upper holes for greater lift and support under constant heavy loads or older suspensions showing fatigue. Use the lower holes to maintain factory ride quality and height. Or split the difference with one end in each position for a balanced setup that fits mixed everyday use and occasional towing.
Installation is straightforward with no drilling required. The included mounting kit fits factory spring packs greater than 2-3/4" tall and ensures quiet operation when unloaded. Extended-length U-bolts and brackets are supplied for leaf springs that sit above the axle, so everything bolts securely in place for long-term performance with no tubing or air pressure to worry about.
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Customer Satisfaction Score:
88% were satisfied with this product
12% of customers were not satisfied
Ratings & Reviews
Springs arrived one day earlier than promised then the mounting kit arrived the next day, on time. Checked for the fit of the mounting kit and it clears the axle and bolt sticking up through the existing springs, but didn't check clearance for the springs yet, will wait until I have more time and actually install them. The springs and mounting kit look strong and should do their job.
These helper springs worked well. My truck didn't sag nearly as much with similar loads in it than it did before. Probably raised it around 4-5 inches when loaded and about an inch when not. Only complaint is the bolts holding the product to the adapter for a spring over axle setup are not of a high grade. They broke, but I may have overtightened them. I replaced them with some grade 8 bolts from the hardware store. They are only needed to hold the new spring in place when the vehicle is raised off the ground. They don't affect the performance of the product.
These helper springs worked well. My truck didn't sag nearly as much with similar loads in it than it did before. Probably raised it around 4-5 inches when loaded and about an inch when not. Only complaint is the bolts holding the product to the adapter for a spring over axle setup are not of a high grade. They broke, but I may have overtightened them. I replaced them with some grade 8 bolts from the hardware store. They are only needed to hold the new spring in place when the vehicle is raised off the ground. They don't affect the performance of the product.
Well first of all if I knew I wouldn't get the product after paying 900.00 for it I wouldn't bought it. Item gets lost by fedex and I get the runaround from u people......I will never buy anything else from you guys and will leave bad feed back everywhere. LONG AS YOU GET YOUR MONEY YOU DONT CARE ABOUT THE CUSTOMER!!!!!!!!!
This product is a must if you are looking for a pleasant ride empty, yet still have additional capacity when you need it. I purchased it because I haul a Lance 1062 camper and was not pleased with the air bag setup I had been using. The air bags would handle the load just fine, but I got a lot of side to side motion while going around corners. I even set each air bag up independent of the other. The SSA15 kit eliminated the side to side motion. It really does act like a sway bar. I recommend you remove the rear tires when you install, it will make it much easier.
The springs, I’ve used on a couple different vehicles over the years, as I’ve also used several air bag set ups, I wanted the simplicity of a one and done for the life of the vehicle kind of setup. This is what I get with these. Install was fairly easy with my available tools and I would easily recommend these to anyone that wanted something purposeful, reliable and straight forward. I load the van with ADV motorcycles, Dirtbike’s and trailers full of gear, supplies and wood and they do just fine, keep a level ride and don’t say in the least. Satisfaction thus far! application
Can not believe the conversion did not include beefing up suspension! Much superior ride with Supersprings and less complicated than airbags. Also added new Sumo shocks front and rear. They also removed the sway bar because of generator installation.
I used the SuperSprings to help support my Slide In Camper for my 2500 Chevy. They support good. I have Timbren installed also, but were bottomed out. After adding the SuperSprings with the Timbren the camper is supported good. The truck sits and rides level
Very pleased! There are two settings, but I prefer the heavier capacity setting and higher in the rear feeling. It has made all the difference in the world with my long wheelbase 2002 Chevrolet Astro Van. I really do not feel that it has changed my ride comfort that much, very little, if any. I always have some kind of load on the van, whether hauling cargo in the van, or towing a trailer, that my ride is still as smooth as always. But, the remarkable thing is, that now my rear end isn't sagging to the ground like it always use to be, even without a load! I'm super pleased and would recommend these springs to everyone for the reasons I've shared above.
I bought these for my 2011 Silverado 1500 crew cab 4wd, truck had a 6” lift and 35” tires. I was frequently towing a 5k pound horse trailer ( bumper pull not gooseneck ) and was getting a lot of bounce in the truck. As a honest review, I installed them ( quick and easy I add ) and removed them a month or so later. They did everything they were suppose to, sway was better, felt more In control at high speeds, and less squat on the truck. My complaint was my truck rode like a 3/4 ton truck without the trailer and I didn’t have 3/4 ton power. So I removed them to get my ride quality back, eventually selling the truck and buying a 3/4 ton. Now in another 3/4 ton for a few week, I would say it wasn’t as bad as a true 3/4 ton, but it does firm up the ride a bit. I still give it 5 stars because it did exactly what it was suppose to, super cost effective, easy to install and remove, no fabrication etc. also I requested some precise measurements on individual pieces from etrailer customer service for fitment with my lift kit and they responded same day with all measurements I needed.
Sum up if your debating, it’s easy to install, easy to remove, way cheaper than bags, adjustable, work great.
Packages arrived on time, everything was there, installation went good, I removed the rear tires to make it easier, picked the rear of the truck up by 1 3/4 inches, have not hooked up 5 th wheel yet, we will see if it helps with the bottoming out .
We purchased the product and it arrived on time, scheduled the mechanic to install the springs at the mechanics shop on step 1 of the instructions that we needed a special bolt kit for an additional $120.00 this was very miss leading. We ordered the additional bolt kit should be delivered on 11/18/24 we will see what is next. It would have been nice to have a pop up or some type of information warning us of the additional bolt kit when ordering the product stating we needed to purchase and additional kit. Im not to impressed with the purchasing part of the SuperSprings experience, hopefully they will be a superior product so I can forget about the bad experience. We will see
Great price fast shipper easy to work with on ordering
Fast delivery!
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!
These helper springs were installed on my 2006 GMC Sierra 2500 HD with 92K miles. Previously, I had used Timbren "enhancers". I like the super springs much better. The ride is much better with the SS. Driving over a speed bump no longer results in whiplash that the Timbren enhancers caused. With a 1000# slide in truck camper the truck sits level. There is not a lot of sway in cross winds. I did install a rear sway bar so that the truck handles normally when my wife drives it loaded. I also tow a boat while the camper is in the bed and there are no negative aspects to this. I recommend the Super Springs for load control on a 06 GMC.
I have ordered a few things from etrailer and they have been on top of things As for this particular item (super springs) I’m very impressed!!! I have a very heavy over loaded truck I typically run 70 to 80 psi in air bags I had my doubts that it would put me at my ride height that I wanted it’s exactly where it needs to be I hope it holds the same or close to it when I hook to my trailers. wish I would have taken before and after pics but again very impressed and would highly recommend
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.
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.
Works excellent for my application. Noticed a difference in the vehicle stance and handling immediately. Kit came with parts not needed that were for other vehicle axle types and not enough 1/2” washers is the only reason for not giving 5 stars.
Used to sell SS, easy effective upgrade as usual....
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".
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Conrad
8/19/2021
After about one year, these are still working great. I typically use my truck for pulling my 5th wheel. But - even when empty, you dont really feel anything different. When the camper is on, it sure levels the truck and camper out perfectly, giving you a great ride.