2011-2019 GM HD 5-6" Lift Kit w/ SST3000 Shocks (44-3050)

The ReadyLIFT 5-6 inch Adjustable Lift Kit for 2011-2018 GM 2500HD/3500HD trucks is a complete front and rear suspension system. It utilizes precision-designed laser-cut sub-frame assemblies and nodular iron knuckles to maintain perfect steering geometry. By integrating a differential drop bracket system, the kit ensures correct CV axle angles for 4WD applications, while forged torsion keys and cast iron rear blocks provide adjustable height without sacrificing comfort or rugged durability.

Features

• Provides adjustable front lift from 5 to 6 inches while maintaining factory ride quality.
• Includes four (4) SST3000 series shocks specifically designed for this suspension system.
• Heavy-duty laser-cut and CNC-formed steel sub-frame assemblies for a direct bolt-in installation.
• Nodular iron knuckles engineered to provide factory-spec geometry and handling performance.
• Integrated differential drop bracket system to ensure proper CV axle angles on 4WD models.
• Components feature a Plascoat performance polymer alloy finish for superior abrasion and impact resistance.
• Includes heavy-duty welded steel crossmembers, a skid plate, and sway bar end links.

Notes

• Single Cab configurations have not been validated for fitment or drivability.
• The kit is primarily designed for 2WD use on public roads; 4WD is for off-road or slow-speed use due to high-speed vibrations.
• Towing capacity will be reduced following the installation of this kit.
• A double cardan driveshaft may be required to eliminate high-speed 4WD driveline vibrations.

Compatibility Notes

• Fits 2011-2018 (and some 2019) Chevy Silverado and GMC Sierra 2500HD/3500HD 2WD/4WD models.
• Single Rear Wheel (SRW) models with a factory tow package may require custom-length U-bolts.
• Will not fit Dual Rear Wheel (DRW) applications without custom-sourced U-bolts.
• Stock 20-inch wheels are compatible, but stock 17-inch or 18-inch wheels cannot be used.

Tire Fitment

• Maximum Tire Diameter: 35 inches.
• Recommended Setup: 35x12.50 tires on a 9-inch wide wheel with 4.75" to 5.5" backspacing.
• 35x12.50 tires on a 9-inch wide wheel with -6 offset typically requires no trimming.

Specs

• Lift Height: Adjustable 5 to 6 inches (Front) / 4 inches (Rear).
• Sub-frame Material: 1/4-inch laser-cut fabricated steel.
• Knuckle Material: Custom formed nodular iron.
• Kit Contents: Forged torsion keys, iron knuckles, steel crossmembers, rear lift blocks, SST3000 shocks, bump stop extensions, skid plate, and hardware.