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SuperSprings Suspension Stabilizer and Sway Control Kit - OEM Leaf Springs Above Axle

SuperSprings Suspension Stabilizer and Sway Control Kit - OEM Leaf Springs Above Axle

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1,500-lb Capacity. Install these helper leaf springs above your vehicle's rear factory leaf springs. They reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads. Designed for OEM springs that sit above the axle. Lowest Prices for the best vehicle suspension from SuperSprings. SuperSprings Suspension Stabilizer and Sway Control Kit - OEM Leaf Springs Above Axle part number SSA8MTKT can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (65)
  • Q & A (22)
  • Videos (1)
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SuperSprings Vehicle Suspension

  • SuperSprings
  • Leaf Springs
  • Rear Axle Suspension Enhancement
  • Light Duty

1,500-lb Capacity. Install these helper leaf springs above your vehicle's rear factory leaf springs. They reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads. Designed for OEM springs that sit above the axle.


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 while 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
  • Customizable - 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
    • Because factory springs set above the axle, an additional mounting kit is included for installation
  • Require no maintenance - no tubing or air pressure to monitor or adjust like air springs
  • Save money
    • Extend the life of brakes, tires and the factory suspension
    • Less expensive than air spring systems
  • Made in the USA


Specs:

  • Weight capacity: 1,500 lbs
    • SuperSprings will not increase your vehicle's weight-carrying capacity
  • U-bolt length: 4"
  • 5-Year limited warranty for non-commercial applications
  • 2-Year limited warranty for commercial applications


SuperSprings diagram of roller and shackle system for extra leaf spring

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.


SuperSprings leaf spring installed on a Ford vehicle

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 semitruck and when 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.


Truck before SuperSpringsTruck after SuperSprings

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.


This suspension stabilizer kit is perfect for trucks towing fifth wheels, campers and gooseneck trailers.


SuperSprings diagram of springs set above and below the axle

An additional mounting kit is included for installation with factory springs that set above the axle.


For vehicles with factory leaf springs that set above the axle, this mounting kit ensures that SuperSprings operate silently when the vehicle isn't loaded. When factory springs set below the axle, the axle itself serves as a fulcrum for the helper leaf springs. However, for vehicles that have OEM springs that set above the axle, the 2-inch brackets in the mounting kit act as fulcrum points on the underside of the SuperSprings. Furthermore, the shackles at the ends of the helper springs hold them in place and pivot as the load is transferred to the SuperSprings. Because there is minimal preload tension in the installed SuperSprings, you get a quieter ride.



SSA8MTKT Super Springs Leaf Spring Suspension Enhancer - Anti Sway - Includes MTKT SuperSprings Mounting Kit

Item # SSA8MTKT

Installation Details SSA8MTKT Installation instructions

This Product Fits The Following Vehicles




Video of SuperSprings Suspension Stabilizer and Sway Control Kit - OEM Leaf Springs Above Axle

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




Video Transcript for SuperSprings Custom Suspension Stabilizer Review

Speaker 1: Today we're going to be taking a look at the SuperSprings lines of custom suspension stabilizer and sway control kits. You'll want to use etrailer's fit guide to determine the correct kit for your vehicle. Here's what our SuperSprings are going to look like once we have them installed. Now these are going to give us the support we need whenever we're hauling a heavy load or towing a heavy trailer. Typically, whenever we're hauling something extremely heavy our suspension wants to flex a lot and our back end sags down. Well these are going to provide us the extra support by activating whenever our suspension flexes, the rollers on the end of our leaf spring are going to activate our helper spring and provide us that extra support.

But also still giving us a nice ride when we're not towing something heavy, because it's going to deactivate those springs and still have a nice comfortable ride.And since they are attached to the front and back of our factory leaf springs, it's also going to act like a sway bar and it's going to prevent our leaf springs from twisting. Giving us a lot more stability when we're driving down the road. The multiple notches in the end here are going to provide us with a little bit of customization, depending on how much support we need. If we need more or if we just have a little bit of spring fatigue in our truck, it'll give us that little bit of lift so whenever we're towing something we don't have quite as much sag.We have a water tank in the bed of our truck as a heavy load or to simulate the tongue weight of a heavy trailer or a fifth wheel. So as I take the truck through my test course, I can definitely tell that there's a load back there.

The engine doesn't seem to be straining that much, but the bumps are extremely harsh and I can definitely feel it resonating through the seat. When I come to the slalom course and I'm going through the turns it definitely has a lot of body roll and I just generally feel like I need to slow down because it feels like it's leaning a lot and it's not responding quickly enough to the turns.The SuperSprings installed and I have the same load back there. When I'm driving through our course I can immediately tell a difference. The bumps aren't as harsh because the truck isn't sagging down as much and there's a little bit more support back there. But really where I tell a big difference is through the slalom course.

It definitely feels way more stable and even taking the turns going in and out, it just feels like it really wants to stick to the ground a lot better and just generally wants to go faster.Compared to airbags, these are a maintenance free option with no tubes to run or air pressure to maintain. Similar to airbags you can customize the level of support provided. Unlike airbags however you do this during the installation and set it one time rather than on the fly adjustability you get with airbags.And that completes our look at the SuperSprings line of custom suspension stabilizer and sway control kits.


Customer Reviews

SuperSprings Suspension Stabilizer and Sway Control Kit - OEM Leaf Springs Above Axle - SSA8MTKT

Average Customer Rating:  4.7 out of 5 stars   (65 Customer Reviews)

1,500-lb Capacity. Install these helper leaf springs above your vehicle's rear factory leaf springs. They reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads. Designed for OEM springs that sit above the axle.

- SSA8MTKT
by:
2012 Chevrolet Silverado 1500

Easy install, I’m 71 years old, it took me 140 minutes to do the installation. I haven’t towed with them yet but the truck ( 2012 GMC 1500) rides and handles much better. These are very pricey but so far so good! 553679



- SSA8MTKT
by:

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. 720061



- SSA11MTKT
by:

Review from a similar Sway-Control in Vehicle Suspension


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. 603418


Comments
If you look at page 4 of the instructions which Ive linked for you, you can see photos showing a single leaf spring set up just like whats shown in the photos you provided thanks for the photos!. Im guessing that page was not included in your instructions for some reason.
-- Mike L - 02/08/2019

49307
Comments
Springs are working wonderful after I figured out the install,. The initial problem was all my fault for being a man and not really reading the instructions haha. All is well
Timothy - 02/09/2020

66471

- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


The installation was easy and straight forward. I removed the tires which gave me great access to install the springs. The ride is smooth and stable. I would recommend this product to others. 226686



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


Just installed and I loved how easy it was took 30 min tops. I expected a much stiffer rear end with the bed empty but was pleasantly surprised at how smooth the ride remained. I did notice a more stable and responsive feel while driving. All in all super impressed with the product so far, shipping was fast (ordered Saturday and received Wednesday, in canada) everything I needed was in the kit and it only raised the rear end up about 1/2". 316290



- SSA13MTKT
by:

Review from a similar Sway-Control in Vehicle Suspension


Spring are great and easy to install... ..... 166185



- SSA41
by:

Review from a similar Sway-Control in Vehicle Suspension


The Superspring SSA41 is high quality and fairly easy to install. I would recommend it to any one that owns a medium size motorhome. 612740



- SSA4
by:

Review from a similar Sway-Control in Vehicle Suspension


Product does just what it says it does. Installed them on a Thursday and towed with them that weekend....... and they did a great job. Handled the tongue weight of my dump trailer better. I did notice a decreased amount of "wave" effect when you are in tow and your heavy trailer hits a bump or swale in the road; and transfers that energy to the truck. Sorta feels like you got a heavy tail that someone is tugging on. This was significantly reduced and made for a pleasant ride Later on Sunday then threw a load of firewood (no trailer this time) in the bed full; and in comparison of a previous haul with wood the truck did not sag as much. My truck config is stock, double cab w/ 8' bed 4x4. I did not notice a stiffness in ride with and empty bed or no trailer in tow. Seemed to be just fine. Slightly raised the rear but with the long truck it is hardly noticeable. One part of the installation was a little difficult, when it came time to compress the leaf it was a bit of a chore. I did have a 5" c-clamp but it was getting tough the last few inches to get the roller underneath the stock leafs. If I had a special leaf spring clamp tool as shown on some of the youtube vids I would have been done in about a 1/2 hour but with out this tool it makes the compression part slow. 145702



- SSA4
by:

Review from a similar Sway-Control in Vehicle Suspension


Great item!! The Supersprings performed just as described. No more sag in the suspension and the benefit of better control. Installation was an hour with the help of an experienced mechanic and the right tools. If it wasn't for removing of the bumb stops on the axle, installation would have been faster. Expensive product, but it is a quality product and made in the USA. After install, the springs raised the rear of the truck about 2" to 3" when unloaded. Best part is that the springs didn't cause the truck to ride rough when unloaded. 21988



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


It a good product for 2017 Ford f150 except 1 factor that it had to mounted more toward the rear and the no bracket to hold it in place if I get a tire rotation or lift the vehicle from the rear the spring roll away and need to clamped while lowering the vehicle. I contacted Super directly to there warranty department and they sent me a lock down kit. It also Lifted the truck about a inch on low setting so I'm sitting at 39 inch in rear. 505177



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


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. 441128



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


Removed these put back in the box I did not like the way the truck handled 418802



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


The super springs installed easily. Won't be able to try them out for a few months, waiting for the camping season. 604770



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


Arrived in three days. Took me and the wife 48 minutes to install. Lifted the rear of a 2012 F150 1 3/8". We like the ride better with the upgrade. Loaded with 1500# handles great. Etrailer is always great to order from. 690764



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


Very easy install , used this product on previous vehicles and they do the job. etrailer is an excellent company to deal with! 360918


Comments
Fantastic
Scott H - 04/03/2018

36781

- SSA7MTKT
by:

Review from a similar Sway-Control in Vehicle Suspension


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. 563128



- SSA15MTKT
by:

Review from a similar Sway-Control in Vehicle Suspension


great product fast shipping easy install improved ride and towing thanks guys will be ordering from ya again 156601



- SSA28
by:

Review from a similar Sway-Control in Vehicle Suspension


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. 557350


Comments
The Sumo Springs continue to provide wonderful results. Many friends with 2500 trucks and onlookers at campgrounds are amazed when we tow our 38’ trailer weighing around 8k lbs when loaded, plus the truck bed loaded with wood and bikes, etc, the family and dog in the cab... All with little to no squat! The ride stays consistent to the 2500 feel I like and it allows me to keep my ol’ beater with high miles and a few thousand miles. I definitely recommend the Sumo Springs and their products. Again, having had their products on other vehicles with more than happy results, I don’t foresee ever purchasing a vehicle and not, at the least, including the rear bump stop supports and adding the leaf kit from there.
Thomas - 08/24/2019

60356

- SSA5MTKT
by:

Review from a similar Sway-Control in Vehicle Suspension


easy to install, hope they work as good as advertised and installed. will find out soon 235384



- SSA15MXKT
by:

Review from a similar Sway-Control in Vehicle Suspension


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. 485410



- SSA29
by:

Review from a similar Sway-Control in Vehicle Suspension


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). 650553



- SSA5MTKT
by:

Review from a similar Sway-Control in Vehicle Suspension


Superspring purchase was right on the mark. Gave George J. all the info on my truck, rv and what I was experiencing. He suggested the SSA5MTKT springs that they should take care of my problem. I installed them in 45 minutes, hooked to my rv and made a pull. I was able to pull at 65 and 70 mph with minimal bouncing and rocking. An increase of 1" in loaded ride height and 10-15 mph was perfect. Thanks George J. and the staff at Etrailer.com 229763



- SSA4
by:

Review from a similar Sway-Control in Vehicle Suspension


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. 108092



- SSA25
by:

Review from a similar Sway-Control in Vehicle Suspension


work's Great , I will be purchasing mor e. 794910



- SSA22
by:

Review from a similar Sway-Control in Vehicle Suspension


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. 785262


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    In order to decrease the amount of sag that you experience on your 2006 Chevrolet 1500 when towing an equipment trailer with a pintle hitch, I recommend taking a look at the SuperSprings Custom Suspension Stabilizer and Sway-Control Kit. These helper springs install above your rear factory leaf springs to reduce sway and prevent sagging when hauling a heavy load. If your Chevy pickup is the 1500LD, you will need part # SSA8MTKT and for the 1500HD, part # SSA10MTKT. You are correct, a...
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  • Compatibility of Roadmaster Active Suspension with Timbren Springs on 2000 Ford F-150 2WD
    The Roadmaster Active Suspension Kit # RAS4612 is the only confirmed fit for your 2000 Ford F-150 2WD. When you mentioned it won't fit with the Timbren rubber spring, it threw a couple flags for me, so I just want to clarify. The systems are not designed to be used in tandem, you would only want to use one or the other in this case. The mounting plates on # RAS2612 and # RAS2691 are not a fit for your vehicle. That bracket type will not work on your vehicle. If you want to have...
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  • Differences Between K Source Custom Towing Mirrors, Recommended Sway Control For '03 Chevy Avalanche
    The only difference is K Source Custom Towing Mirrors, part # KS62075-76G have LED turn signals and # KS62075-76GE do not. Other than that they are the same product. Air Helper Springs, like The Firestone Ride-Rite # F4108, will help control sway on rough terrain, but the main purpose of air helper springs is to keep your vehicle level when hauling heavy loads and level off-center loads. Since you already have a weight distribution system with sway control and feel like you need more...
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  • Recommended Suspension Enhancement System for a 2011 Chevy Silverado 1500 In 40 Degree
    The SumoSprings Solo Custom Helper Springs do indeed have a minimum temperature range of -25 degree Fahrenheit. If the temperature were to reach below this then they would become very brittle and could then crumble apart. Therefore, I instead recommend using the SuperSprings Suspension Stabilizer and Sway Control Kit part # SSA8MTKT which will add support just as the Solo Custom Helper Springs but there is no minimum temperature range.
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  • Rear Suspension Enhancement for a 2002 Dodge Ram 1500 4x4 Quad Cab
    All of the install kits for the Draw-Tite Hide-A-Goose # 9464, have the brackets on the out side of the frame rails. The Firestone Kit, # F2286, installs on the bottom of the rail. However, it has a bracket that goes on the outside of the rail so it and the gooseneck would interfere with each other. Instead, you can use the SuperSprings Vehicle Suspension, # SSA8MTKT. These springs do not mount to the frame so they should not interfere with the gooseneck hitch.
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Info for this part was:

Expert Research:
Mike L
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Brandon M
Expert Research:
Adam R
Video by:
Andrew K
Written by:
Tricia G
Updated by:
Mary E
Updated by:
Jenny M
Installed by:
Robert C

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