SuperSprings Suspension Stabilizer and Sway Control Kit - OEM Leaf Springs Above Axle
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2017 GMC Yukon
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2017 GMC Yukon
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Heavy trailers or bed loads can make the rear end sag and the ride feel sloppy. This SuperSprings helper spring kit adds up to 1,100 lbs of support above your factory springs to keep your truck level and stable. It lifts the rear when loaded and prevents bottoming out so you maintain steady steering, braking, and headlight aim when hauling or towing.
Crosswinds, passing semis, and quick turns can cause sway that wears you out on long drives. These helper leaf springs act like sway bars, holding your factory springs steady and reducing body roll by up to 30 percent. That means less rocking and more control when cornering or towing through wind or uneven roads.
There’s no tubing or air pressure to mess with here. Rollers on each end of the SuperSprings automatically engage when your stock springs flex under load and back off when the load is gone. The result is quiet, maintenance-free operation that adjusts itself on the road—no crawling under the truck to make changes.
You can choose how much support you want right from installation. The shackles have several bolt-hole options so you can dial in a setting that maintains your original ride height, compensates for spring fatigue, or increases load support for constant heavy loads. It’s an easy way to match support to how you actually use your truck.
Installation is simple with bolt-on mounting—no drilling required. Because these springs sit above the axle, the included mounting kit adds 2-inch brackets that act as fulcrum points for quiet, stable operation when unloaded. Once installed, you’ve got extra support ready to go every time you hitch up or load down.
Alternate Instructions
Ratings & Reviews
Exceeded all expectations
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.
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.
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.
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
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
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 .
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.
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".
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
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.
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.
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 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.
Simple to install. Completely eliminated all sag especially loaded. Very pleased!!!
Fit as stated by manufacturer and delivered on time.
looking for something that would allow me to haul/pull a little more weight, this is it. was easier to install than I thought it would be. could tell the difference right away. have a smaller travel trailer, this took almost all the sag away.
It arrived earlier than I had expected I installed it the following day, very easy to install noticed a gain in drivability with in 50 ft on sway control. I haven’t hitched up to either trailer 6x12 enclosed and 5x10 dump but I’m sure it will be better experience. I’ll let you know. Thanks!
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.
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