The ReadyLIFT 3-inch SST2.1 Lift Kit for 2011-2019 GM 2500HD/3500HD trucks is a comprehensive suspension upgrade that goes beyond a simple leveling kit. By including heavy-duty fabricated upper control arms, this system corrects ball joint angles and increases suspension travel. The kit utilizes forged torsion keys to provide 3 inches of front lift, while the Falcon 2.1 performance shocks offer a significant improvement in damping over the factory units, making it an ideal choice for owners who want to run 35-inch tires without sacrificing highway comfort or towing stability.

Features

• Heavy-duty fabricated steel upper control arms improve strength and provide proper ball joint pivot angles.
• Falcon 2.1 Monotube performance shocks are specifically valved for GM HD trucks to provide superior damping.
• Forged torsion keys provide a reliable and adjustable front lift while maintaining factory ride quality.
• Torsion bar unloading tool-compatible design ensures a safe and straightforward installation.
• Includes differential drop spacers to maintain proper CV axle angles and reduce wear.
• Fabricated 1-inch rear lift blocks provide a subtle lift to maintain a slightly raked or level stance.
• Includes heavy-duty iron-casted torsion key adjusters for maximum durability under load.

Notes

• A torsion bar unloading tool is required for a safe installation of the new torsion keys.
• Vehicle alignment is mandatory after installation to ensure proper tire wear and handling.
• Estimated installation time is approximately 4 to 5 hours excluding alignment.

Compatibility Notes

• Fits 2011–2019 Chevrolet Silverado and GMC Sierra 2500HD/3500HD 2WD and 4WD models.
• Compatible with both Duramax Diesel and 6.0L V8 gasoline engines.
• Does not fit trucks with the "MagneRide" magnetic ride control system.
• Specifically designed for Single Rear Wheel (SRW) and Dual Rear Wheel (DRW) models.

Tire Fitment

• Maximum Tire Diameter: 35 inches.
• Recommended Setup: 35x12.50 tires on a 9-inch wide wheel with a 0 offset (minor trimming may be required).
• Stock wheels can be reused, but tire width should be limited to avoid contact with the control arms.

Shock Specs

• Shock Type: Falcon 2.1 Monotube performance dampers.
• Construction: 2.125-inch 6061-T6 aluminum alloy shock bodies for high impact resistance and heat dissipation.
• Technology: Features Volume Optimized Damping (VOD) with a digressive linear piston for improved low-speed control.
• Fluid: Uses Red Line high VI shock oil for consistent performance in extreme temperatures.

Specs

• Front Lift Height: 3.0 inches.
• Rear Lift Height: 1.0 inch.
• Kit Contents: Forged Torsion Keys, Fabricated Upper Control Arms, Falcon 2.1 Shocks (Front and Rear), Differential Drop Spacers, and 1-inch Rear Blocks.