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TorkLift StableLoad Suspension Upgrade w Quick-Disconnect - Lower Overload Springs - Stainless Steel
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TorkLift StableLoad Suspension Upgrade w Quick-Disconnect - Lower Overload Springs - Stainless Steel

Item # TLA7310S
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Vehicle Suspension TLA7310S - Heavy Duty - TorkLift
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Get improved handling with minimal sway and body roll for your vehicle with this suspension enhancement kit. Stainless steel StableLoad pads feature quick-disconnects and a hinged design so you can easily return to your original ride when not towing. Lowest Prices for the best vehicle suspension from TorkLift. TorkLift StableLoad Suspension Upgrade w Quick-Disconnect - Lower Overload Springs - Stainless Steel part number TLA7310S can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (4)
  • Q & A (9)
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TorkLift Vehicle Suspension - TLA7310S

  • TorkLift
  • Overload Pads
  • Rear Axle Suspension Enhancement
  • Heavy Duty

Get improved handling with minimal sway and body roll for your vehicle with this suspension enhancement kit. Stainless steel StableLoad pads feature quick-disconnects and a hinged design so you can easily return to your original ride when not towing.


  • Dramatically improves handling by pre-activating your vehicle's factory lower overload springs
    • Helps to evenly distribute weight, ensuring that truck stays level for better handling
    • Reduces side-to-side sway and body roll
  • Angled structure maximizes contact surface for more effective support
    • Tapered wedge fits between curved springs better than a flat pad
  • Adjustable design lets you modify each StableLoad to fit perfectly in the gap between your truck's rear springs
    • Wedge packs can be taken apart so you can remove one or more of the contact pads
  • Quick-disconnects let you easily return to original ride when you're not towing or hauling
    • Wedge pack is on a hinge mechanism so StableLoad can be pivoted in or out of engagement
    • 3/8" Ratchet extension and ratchet (not included) required for activation
  • Stainless steel construction protects against the elements - ideal for any climate
  • Compatible with aftermarket air bag suspension upgrades
  • Custom-fit for your vehicle
  • Simple, do-it-yourself installation
    • StableLoad units bolt onto the ends of each overload spring
    • No drilling required
  • Kit includes 4 StableLoad units and necessary hardware
  • Made in the USA
  • Lifetime warranty

Enhancing Factory Overload Springs

The lower factory overload springs on your truck are designed to help compensate for a large payload. When you are hauling a heavy load, your truck's standard leaf springs can't always counteract the weight of it. As a result, if you hit a bump when your suspension is fully loaded, the leaf springs will give and cause your truck to bottom out. The overload springs help keep this from happening by mounting beneath the leaf springs to provide points of contact for the stressed springs.

Gap Between Standard Leaf Spring and Lower Overload Spring

There is natural gap between your truck's standard leaf springs and its lower overload springs. This gap allows the upper leaf springs to flex a bit before making contact with the overload springs, but having this gap creates a situation where bounce (or jounce) often occurs. StableLoads are designed to fill the gap between your standard springs and your overload springs. This pre-activates the overload springs, ensuring that they are engaged from the start instead of engaging only when your leaf springs make contact, at which point you've probably already felt the jarring.

StableLoad Suspension Enhancement and Aftermarket Air Bags

By enhancing your lower overload springs in the way described above, you will notice less sway and body roll. This is due to the pre-loading effect of the StableLoads, which helps to better distribute the weight of your payload over the entirety of your factory suspension. This is the primary difference between StableLoads and many air bag overload systems.

With air bag suspension enhancement, the load in your truck is being taken on by the air bags. Air bags are designed to level your truck, and they operate as intended when they're under a normal load. But if you are hauling or towing a particularly heavy load, this type of suspension enhancement can create some problems. In order to get the correct amount of leveling and to ensure that your suspension won't bottom out, you will likely have to fill the air bags to a very high psi. Doing this effectively removes the load from your factory suspension. As a result, your truck's suspension is no longer able to operate as it was designed. This can lead to handling issues, such as porpoising, sway, or body roll.

If you currently have this problem with your air bag system, you can add StableLoads to your suspension and get the best out of both products. StableLoads are effective on their own, but they've also been tested with aftermarket air bag suspension systems. The two enhancements work particularly well together if you have a heavy payload. By installing StableLoads between your lower overload springs and your standard leaf springs, you are already adding support to your suspension to help prevent bottoming out, which air bags work to prevent as well. As a result, you won't have to fill the bags nearly as full, which means that they won't take as much of the load off of your factory suspension, thus allowing your suspension to function as designed - only better.

Quick Disconnect

TorkLift Fortress Propane Tank Lock

These StableLoads can be quickly and easily engaged and disengaged. The quick-disconnect design allows you to pivot the wedge pack - the piece that sits between the springs - in and out of position with a standard ratchet and 3/8" extension (not included). As a result, you can get a stable load when you're weighted down and then return to your regular ride when you're done hauling.

Tested and Proven Winner

TorkLift's StableLoads were tested against vehicles with no suspension enhancement and vehicles with air bags that were inflated to 100 lbs; and the results are clear. By adding StableLoads to your suspension your vehicle will ride smoother, causing less wear and tear on your suspension and tires. The trucks that were tested were loaded with 2,800 lbs. The degree of movement was then recorded, using an inclinometer, when the trucks encountered the 3 most common types of handling problems: side-to-side sway, porpoising, and body roll.

Preventing Side-To-Side Sway

Side-to-side sway is triggered when your vehicle encounters uneven ground, such as a pot hole, and the suspension gives way when it cannot counteract the weight of the heavy load being carried. This creates a side-to-side bouncing motion. As you can see in the graph above, air bags provide an advantage over no suspension upgrades. But the StableLoads offer dramatic improvement over both the standard suspension and the air bag suspension.

Preventing Porpoising

Porpoising is the rising and falling action your vehicle makes when driving over an object like a speed bump. Having too much bounce can make you feel like you're riding in the back of a school bus. As you can see in the graph, there is virtually no difference in porpoising between trucks with standard suspension systems and those with air bags. Only the StableLoad offers improvement for this type of problem.

Preventing Body Roll

Body roll occurs when your heavy load transfers unevenly as you navigate a turn, causing one side of your vehicle to lean dramatically. In some cases this can lead to your truck's tires coming off of the ground and it could even cause your vehicle to roll over if it is too top heavy. Again, according to the graph above, air bags offer no help with this problem. It is only with the StableLoads that stability improves.

A7310S Tork Lift Stable Load Suspension Enhancement - No Drill - Stainless Steel

This Product Fits The Following Vehicles

Video of TorkLift StableLoad Suspension Upgrade w Quick-Disconnect - Lower Overload Springs - Stainless Steel

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

Video Transcript for Review of TorkLift Vehicle Suspension - Rear Axle Suspension Enhancement - TLA7310S

Today we're going take a quick look at the TorkLift stable load suspension upgrade with quick disconnect. This is going to allow you to eliminate any of those common problems that we have when we load up our vehicle or truck for hauling a heavy camper or maybe a fifth wheel behind us. We need to have some load leveling capability and we also don't want to have that typical porpoising effect, side to side sway, all those things. This is going to help to eliminate that. The thing that I really like about this system is that these can be used in conjunction with airbags. So a lot of times if you're really loading down your truck up to the max capacity that it can hold, you'll have to sometimes bring your airbags up to such a high psi that now it's starting to transfer the weight off of the suspension components.

And it's pretty much all on those airbags.So that can start to give you more of that side to side sway, that sort of proposing buoy effect that we don't really like whenever we're in our vehicle. So these are going to work in conjunction with that. It's going to allow you to not have to fill your airbags so high to where it makes the handling of your vehicle not as good.These are going to be a quick installation. They are going to be custom fit. It's going to work for a lot of different vehicles, GMC, Ford, Chevy as well.

You'll want to use the fit guide here at etrailer.com to check and make sure that these are going to be a fit for your specific vehicle. Just put in your year, make, and model and go from there.Now this is no drilling required. Basically this is just going to sit on your leaf springs and engage that overload spring. So that wedge design allows it to fill the gap there and sort of preload that overload spring, so you get a better distribution of the weight across your suspension components.These are going to be make of a durable stainless steel construction. So we don't have to worry about them rusting out over time.

So we'll have our little cotter pin at the back and then this cylinder pin that we'll pull out. And then you can adjust this to fit in that gap there. That's something I like about the hole that we have for our pin, is that it has a little gasket. That prevents any rattling from this pin. You'll also tighten down the but and bolts here on the other side or kind of the pivot point for this to make sure that it doesn't rattle or move around while you're driving.But pretty easy install.

Comes with everything you see here laid out on the table. It does take a 3/8 inch ratchet and extension to tighten everything down. That is not included. You will have to provide those tools on your own. But it's just going to give you a nice quick and easy do it yourself way to improve the overall handling and ride in your vehicle whenever you're hauling something really have with your truck.We'll have our four stable load units. So we'll get two for each side of our vehicle. These are going to go in the rear of our truck to stable out that rear suspension. So it's going to help all your suspension components just work better. Makes them last a little longer since they're not having to take as much of the brunt of that weight. And again it can be used with airbags. These are not going to interfere with your airbags at all. And it helps to provide a little bit more support for that.Now this does come with a lifetime warranty from TorkLift. And this product is also made in the USA. That's going to do it for our look at the TorkLift stable load suspension upgrade with quick disconnect.

Customer Reviews

TorkLift StableLoad Suspension Upgrade w Quick-Disconnect - Lower Overload Springs - Stainless Steel - TLA7310S

Average Customer Rating:  4.8 out of 5 stars   (4 Customer Reviews)

Get improved handling with minimal sway and body roll for your vehicle with this suspension enhancement kit. Stainless steel StableLoad pads feature quick-disconnects and a hinged design so you can easily return to your original ride when not towing.

- TLA7310S
2013 Ford F-250 and F-350 Super Duty

Installed as expected. Excellent quality of build. Spend slightly more for the stainless steel version, cant go wrong. 657210

- TLA7310S

These things were very pricey but come really well recommended so I bit the bullet and ordered them. The alternative was having an RV shop install an entire system of air bag suspension. Torklift makes these and I ordered the more expensive set which is all stainless steel but considering where it gets bolted under your truck its worth not having everything frozen with rust a year later. The instructions were actually very poor on this item but it was simple enough to figure out on my own although I had to call Torklift twice. I was done in an hour or two and it works perfectly. 647215

- TLA7310S
Ford F-350 Super Duty

I received the stainless steel version to avoid corrosion. A well built, sturdy product. On my F350, I had to do quite a bit of jacking and use of crowbar to get it in. I haven't towed with them yet and they do not change the ride by leaving them engaged. This should solve the porpoising problem we have towing a fifth wheel trailer. 647710

- TLA7310S

Works great, thanks so much! 655467


Ask the Experts about this TorkLift Vehicle Suspension

  • Does Torklift StableLoad and Roadmaster Suspension System for 2018 Chevy Silverado Do Same Thing
    The TorkLift StableLoad Suspension Upgrade # TLA7310S that you referenced basically allows the overload springs of the vehicle suspension to engage sooner to gain additional suspension support whereas the Roadmaster Active Suspension kit # RAS4611 basically is like adding an additional leaf spring to the setup. They both provide additional support so in a way they perform the same function but they do it in a different way. I would not recommend both at the same time though as that would...
    view full answer...
  • TorkLift StableLoad Vs. Timbren for 2020 Ford F-350 Super Duty
    I talked to some of our guys down in our installation bays and based on the feedback I received, I definitely recommend the Timbren Suspension Enhancement System # TFR350SDJ for your 2020 Ford F-350 Super Duty. The TorkLift StableLoad # TLA7310S work by engaging your factory lower overload springs earlier than they would otherwise, which minimize sway and assist you when hauling heavy loads. However, disengaging this system requires you to get under the truck and use a rachet (not included)...
    view full answer...
  • What is Purpose of Lateral Angle on Torklift StableLoad Suspension Enhancement
    The lateral angle of the Torklift StableLoads part # TLA7310S is designed to make engaging the system a bit easier, but as you can see in the picture I attached when they are engaged the support is across the entire overload spring. I also attached a review video for the kit for you to check out as well.
    view full answer...
  • Is Drilling Required to Install Torklift StableLoad # TLA7310S in 2018 Ford F-350
    For your 2018 Ford F-350 the TorkLift Stable Load # TLA7310S that you referenced does not require drilling as long as the overload springs are pre-drilled. If not, they can be pre-drilled.
    view full answer...
  • Differences in Torklift StableLoad Systems And Will They Replace Airbags
    I wouldn't say that the TorkLift StableLoad Suspension Upgrade w Quick-Disconnect # TLA7310S takes the place of an airbag system and they can definitely be used together with a system like the Firestone Ride-Rite Air Helper Springs # F2605. This StableLoad kit simply engages your overload springs sooner, which will help reduce sway. Some differences between these solutions are that airbags are easily adjustable and can adjust side to side to support off center loads. The StableLoads...
    view full answer...
  • Clearance Required To Install TorkLift StableLoad on 2004 GMC Sierra Denali
    We measured the TorkLift StableLoad # TLA7310S and found that from the center of the mounting hole to the furthest edge is 3-5/8 inches on one side, and 2-1/8 inches on the other side. To determine if the StableLoad will clear your Quadrasteer components on your 2004 GMC Sierra, measure from the center of the factory lower overload spring, out the same number of inches I mentioned above, this is the space that will be taken up by them. It is important that the StableLoad has at least 1...
    view full answer...
  • Do SuperSprings Replace Factory Springs on 2019 Ford F-450 With Factory Upper Overload Springs
    Those are good questions, and the SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA25 will not replace the factory springs on your 2019 Ford F-450, they work in tandem along with your springs, which will not be removed. These are absolutely going to improve your ride because they can be customized for your application whether that means you have a constant heavy load and need constant support or simply want to get a more balanced suspension if you tow or have a heavy...
    view full answer...
  • Is the Timbren Suspension System Or Torklift Stable Load Better for 2020 Ford F-350 With Rear Sag
    I recommend to use the Timbren Suspension Enhancement System - Rear Axle part # TFR350SDJ which will give you more stability to reduce rear sag. The springs provide the additional support under heavier loads that your factory suspension cannot provide. The TorkLift StableLoad Suspension Upgrade w Quick-Disconnect part # TLA7310S does help to support the lower overload springs and eliminate body roll but they won't fix the rear sag.
    view full answer...
  • Recommended Camper Tie Downs for 2020 Ford F-350 with Extended Running Boards
    You're actually on the right track, here. The TorkLift Custom Frame Mounted Tie Downs # TLF2021 and # TLF2021A (aluminum) are a confirmed fit through TorkLift for the 2020 F-350 with the running boards that extend past the cab of the truck. Since these are available you'll be able to go ahead and order those extended running boards. For rear tie downs, you'll want to use the # TLF3008 or # TLF3008A (aluminum), which are also confirmed for your new truck. If you also need turnbuckles...
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Video Edited:
Jacob T
Installed by:
Kathleen M
Video by:
Dustin K
Test Fit:
David F
Written by:
Kristina F
Updated by:
Isabelle B

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