Body Armor 4x4 Torsion Key and Shock Extender for GMC/Chevrolet HD

The Body Armor 4x4 Torsion Key and Shock Extender is a bolt-on leveling solution for 2011–2019 GMC and Chevrolet 1500HD, 2500HD, and 3500HD trucks in both 2WD and 4WD configurations. Machined from 4140 forged steel, it delivers 1–3 inches of additional front lift while maintaining stock ride quality and accommodating tires up to 33 inches.

Forged Steel That Returns to Stock When You Need It

The torsion key and shock extender is constructed from 4140 forged steel, a high-strength alloy used in demanding drivetrain applications. Torsion-bar suspension components carry significant load with every flex, and a weaker part can deform under stress and alter lift height or handling over time. With 4140 forged steel, the geometry stays consistent mile after mile.

Because the extender is a bolt-on replacement for the factory torsion key, the truck can be returned to its stock configuration without cutting, welding, or permanent modification. That flexibility is useful if you sell the truck, need a dealer inspection, or simply want to swap back to the original setup.

Lift That Works With Your Existing Tires and Suspension

The 1–3 inch lift range creates enough front clearance to run tires up to 33 inches without rubbing, which covers the most common tire upgrade on these HD platforms. The extender is designed to preserve stock ride quality rather than stiffen or alter suspension travel, a meaningful distinction on trucks that see both highway miles and work-site use where a harsh ride translates directly to driver fatigue.

Features

• 4140 Forged Steel Construction: high-strength alloy for consistent geometry under load
• 1–3 Inch Lift Range: adjustable front lift to suit tire size and clearance needs
• Bolt-On Installation: no cutting, welding, or permanent modification required
• Reversible to Stock: original torsion key can be reinstalled without damage
• Up to 33-Inch Tire Clearance: accommodates the most common HD tire upgrades
• Stock Ride Quality: designed to maintain factory suspension feel

Specifications

Who This Is For and Isn't

This extender suits owners of 2011–2019 GMC or Chevrolet 1500HD, 2500HD, or 3500HD trucks in either 2WD or 4WD who want a modest front lift of 1–3 inches to gain ground clearance, level the stance, or fit tires up to 33 inches without sacrificing stock ride quality or making permanent changes to the truck.

This kit does not fit trucks outside the 2011–2019 GMC/Chevrolet HD model years and configurations listed, and it is not designed for tires larger than 33 inches. It is a torsion-bar suspension component and is not compatible with trucks that use coil-spring or leaf-spring front suspension.

Common Questions

Which exact trucks does this torsion key extender fit?

The Body Armor 4x4 torsion key and shock extender fits 2011–2019 GMC and Chevrolet 1500HD, 2500HD, and 3500HD trucks in both 2WD and 4WD configurations. It is not confirmed to fit any other make, model, or year range.

How much lift does this kit provide?

The torsion key and shock extender provides 1–3 inches of front lift. The exact amount achieved depends on the truck's starting torsion-bar preload and the adjustment made during installation.

What tools or skills are needed to install it?

The torsion key and shock extender uses a bolt-on installation process, meaning no cutting or welding is required. A torsion-bar unloading tool and basic hand tools are typically needed for this type of suspension work; Body Armor 4x4 provides an installation instruction sheet linked from the product page.

Can the truck be returned to stock after installing this extender?

Yes. Because the torsion key and shock extender replaces the factory torsion key with a bolt-on part, the original key can be reinstalled to return the truck to its stock suspension configuration without permanent modification.

What is the largest tire size this lift supports?

The Body Armor 4x4 torsion key and shock extender accommodates tires up to 33 inches in diameter.