Torklift Stainless Steel StableLoad© Lower Overload Kit - 2017-2026 Ford F250/F350/F450 Super Duty - A7312S

Stop Fighting Your Truck. The problem is the gap. On compatible trucks, the factory overload spring is already there, but it does not engage immediately. The main spring pack has to compress before the overload comes into play, allowing the truck to squat and move more under load. StableLoad® takes up that gap and pre-activates the factory overload spring so it starts working sooner.

The result is less rear-end sag, reduced sway and body roll, less porpoising, better steering control and a more stable loaded ride. StableLoad works with the suspension your truck already has instead of bypassing it. At Torklift Central in Kent, Washington, we can offer you a vehicle suspension evaluation and walk you through our StableLoad Challenge so you can see the StableLoads in action.

What is the StableLoad Challenge?

At the Lance Owners of America Rally, attendees were asked to complete the StableLoad Challenge. The setup was straightforward: two identical Ford F-150 trucks, each carrying 2,800 pounds of rock in the bed. The only difference? One truck had StableLoads engaged, while the other relied solely on factory suspension.Without StableLoads, test drivers didn’t mince words about the stock suspension experience. With 2,800 pounds in the bed, the truck felt unstable and unpredictable.

"This thing already feels like it's going to roll over," one driver noted immediately. "It feels loose and it's just a lot of movement back there."

With StableLoads, the transformation was immediate and dramatic. When drivers switched to the truck with StableLoads engaged, their reactions told the story, with the difference in handling being the most consistent feedback.

"It's not like having any load at all," one driver observed. "The springs are more engaged instead of being compressed all the way down."

View the full StableLoad Challenge video at the Lance Camper Owners Rally to experience the StableLoad difference.

StableLoad® Features

• Improves handling, stability, and control while towing and hauling. StableLoad® dramatically improves loaded handling by reducing body roll, sway, and porpoising while helping the truck feel more stable and controlled on the road.

• Pre-activates the factory overload suspension without sacrificing unloaded ride comfort. StableLoad® is the only overload suspension system designed around the two major truck manufacturing laws of suspension: 

• Law 1: the truck must remain uncompromisingly comfortable as a passenger vehicle.

•  Law 2: the truck must ride safely without compromising comfort while towing and hauling.

• Turns on and off in seconds. Lower StableLoad® quick-disconnect models can be engaged when towing or hauling and disengaged when the truck is unloaded, allowing the factory suspension to return to its normal unloaded operation.

• Made from rust-free stainless steel. Stainless-steel construction keeps the StableLoad® looking new without relying on a protective powder-coat layer.

• Uses a quad-contact design to work with the factory suspension. StableLoad® maintains four points of suspension contact to complement the vehicle's specially engineered suspension system. Automotive manufacturers invest millions of dollars developing that suspension geometry, while other rear suspension products can reduce contact to only two points.

• Enhances airbag performance when the systems are used together. StableLoad® activates the factory overload springs so they carry more of the load, which can reduce the amount of airbag pressure needed while maintaining adjustable air support.

• Includes four lower StableLoad® units. One complete kit includes four lower StableLoads and outfits one complete vehicle.

• Backed by the Legendary Lifetime Warranty. StableLoad® warranty coverage includes the vehicle's factory leaf springs, providing additional confidence in the suspension system the product is designed to enhance.

• Proudly made in the USA. StableLoad® is manufactured in the United States by Torklift.

• Recommended for truck camper stability and control. When hauling a truck camper, Torklift strongly recommends StableLoad® to help support the load, reduce sway and body roll, and promote safer, more controlled handling on the road.

• Backed by a 90-Day Satisfaction Guarantee. Experience the difference StableLoad® makes in stability, control, and driving confidence. If StableLoad® does not transform your ride within 90 days, return it for a full refund.

StableLoad® vs. Rubber Bump Stops, Airbags, and Sway Bars

One product can address multiple loaded-handling problems. StableLoad® is different from many suspension add-ons because it works with the truck's existing factory overload springs to address several symptoms at the same time. By pre-activating the factory overload system, StableLoad reduces loaded squat, sway, body roll, and porpoising while improving steering control and overall loaded stability.

For many compatible truck camper, towing, and hauling applications, that means StableLoad can function as an all-in-one loaded-handling upgrade instead of requiring several separate products to address different symptoms.

Versus Rubber Bump Stops and Jounce-Style Springs

• StableLoad activates the suspension your truck already has. Instead of relying only on an added rubber contact point, StableLoad brings the factory overload leaf springs into the suspension cycle sooner so the truck's existing suspension can do more of the work.

• StableLoad addresses more than rear-end squat. Earlier overload engagement also reduces sway, body roll, and porpoising for a more controlled loaded drive.

• Quick-disconnect models can be turned on and off. Engage StableLoad when towing or hauling, then disengage it when the truck is unloaded so the factory overload system can return to its normal unloaded operation.

• The quad-contact design works with the factory suspension. StableLoad maintains four points of suspension contact to complement the suspension geometry engineered into the truck.

Versus Airbags

• StableLoad and airbags solve different problems. StableLoad pre-activates the factory overload springs to improve loaded control. Airbags add adjustable air support and are especially useful when the truck needs adjustable leveling.

• StableLoad does not require air-pressure management. There are no compressors, airlines, or pressure adjustments required as part of the StableLoad system.

• You may not need to build a complicated suspension package. If squat, sway, body roll, and porpoising are the main problems, StableLoad can address those symptoms through one mechanical upgrade.

• StableLoad and airbags can also work together. When a compatible truck needs both stronger loaded control and adjustable leveling, the two systems can be combined after fitment is confirmed.

Versus Rear Sway Bars

• A sway bar primarily targets body roll. StableLoad addresses body roll while also reducing loaded squat, sway, and porpoising by engaging the factory overload springs sooner.

• StableLoad tackles several symptoms through one suspension change. That can reduce the need to stack one product for squat, another for sway, and another for overall loaded control.

• Quick-disconnect StableLoads give the driver control over engagement. When the truck is not carrying the heavy load, the system can be disengaged on compatible quick-disconnect applications.

Why StableLoad Is Often the Best First Suspension Upgrade

Truck owners frequently start shopping for suspension products one symptom at a time. The truck squats, so they look for a leveling product. It sways, so they consider a sway bar. It porpoises, so they start looking for another suspension upgrade.

StableLoad takes a different approach.

Start with the factory suspension already under the truck. By eliminating the gap that delays factory overload engagement, StableLoad brings those overload springs into action sooner and addresses several loaded-handling problems at the same time. StableLoad brings those overload springs into action sooner and addresses several loaded-handling problems at the same time.

For many compatible trucks, that means one StableLoad system can deliver the loaded control the driver was trying to build with several separate suspension products.

Why Buy Through Torklift Central

Torklift Central turns a loaded-truck problem into a verified, installed StableLoad solution. At our Kent, Washington RPDC campus, we confirm the factory overload configuration, check clearance and existing suspension modifications, match the correct StableLoad, and plan the installation so the product can do what it was designed to do: put the truck’s factory overload system to work sooner.

Recommended Use Cases

• Truck owners who want less loaded squat, sway, body roll and porpoising while staying within all vehicle and component ratings.

•  Drivers who want better loaded handling control from the truck’s factory overload system before deciding whether adjustable air leveling is also needed.

•  Owners who want professional installation planning for configurations with specific spring preparation, tire-clearance or suspension-package requirements.

•  Quick-disconnect applications where the customer wants a verified method for moving between loaded and unloaded use.

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