2011-2019 GM HD 3.5" SST Lift Kit Front 2 Rear Upper Control Arms (69-3422)

2011-2019 GM HD 3.5" SST Lift Kit Front 2 Rear Upper Control Arms (69-3422)The ReadyLIFT 3. 5 inch Front 2 inch Rear SST Lift Kit for 2011 2019 GM Silverado Sierra 3500 HD trucks is a comprehensive bolt on suspension system designed for Dual Rear Wheel (DRW) and Single Rear Wheel (SRW) models with factory tow package springs. This kit features heavy duty tubular steel upper control arms and forged torsion keys indexed specifically for 3. 5 inches of front lift. By including critical steering and drivetrain corrections, such

The ReadyLIFT 3.5-inch Front / 2-inch Rear SST Lift Kit for 2011-2019 GM Silverado/Sierra 3500 HD trucks is a comprehensive bolt-on suspension system designed for Dual Rear Wheel (DRW) and Single Rear Wheel (SRW) models with factory tow package springs. This kit features heavy-duty tubular steel upper control arms and forged torsion keys indexed specifically for 3.5 inches of front lift. By including critical steering and drivetrain corrections, such as reinforced tie-rod assemblies and differential drop spacers, this kit provides a significant stance improvement while maintaining factory ride quality and durability.

Features

• Provides 3.5 inches of front lift and 2.0 inches of rear lift for an improved, aggressive stance.
• Heavy-duty tubular steel upper control arms engineered to match the strength of the HD chassis.
• Lift-oriented forged torsion keys provide adjustable height while preserving the OEM ride.
• Heavy-duty replacement tie-rod end assemblies resolve the traditional weak link in GM steering systems.
• CNC-machined differential drop spacers maintain safe factory CV axle angles on 4WD models.
• Includes OEM-style 2.0-inch cast iron rear lift blocks with new longer U-bolts.
• True bolt-on design requires no cutting of OEM parts or welding.
• Clears wheel and tire combinations up to 34 inches in diameter.

Notes

• A professional wheel alignment is required after installation to ensure optimal handling and safety.
• Headlamp aim must be checked and adjusted for safety following the change in ride height.
• Advanced Driver Assistance Systems (ADAS) should be recalibrated to maintain proper monitoring and function.
• Installation by a certified mechanic is recommended due to the complexity of the suspension modifications.
• Requires the use of longer front shocks (not included); ReadyLIFT SST3000 Performance Front Shocks are recommended.
• Single Rear Wheel (SRW) trucks with factory overload/tow package springs may require custom U-bolts if the provided ones are insufficient.

Compatibility Notes

• Fits 2011–2019 Chevrolet Silverado and GMC Sierra 3500 HD models.
• Specifically for use on Dual Rear Wheel (DRW) models or Single Rear Wheel (SRW) models equipped with the factory tow package rear leaf springs.
• Differential drop spacers are for 4WD models only and are not used on 2WD applications.

Specs

• Front Lift Height: 3.5 inches (max).
• Rear Lift Height: 2.0 inches.
• Max Tire Size: 34 inches.
• Material: Tubular Steel (UCAs), Forged Steel (Keys), and Cast Iron (Blocks).
• Kit Contents: Tubular upper control arms, forged torsion keys, heavy-duty tie-rod assemblies, differential drop spacers, 2.0-inch rear blocks, and longer U-bolts.