2020-2025 GM HD 8" Lift Kit w/ Falcon 2.1 Shocks (44-30821)

The ReadyLIFT 8-inch Lift Kit for 2020-2025 GM HD trucks is a comprehensive big lift solution that enables you to run up to 38-inch tires while preserving a smooth, level ride. Built with heavy-duty laser-cut steel crossmembers and OE-style cast iron knuckles, this kit corrects suspension geometry for precise alignment. The inclusion of performance-tuned Falcon 2.1 shocks and fabricated steel upper control arms ensures that your truck remains capable and comfortable, whether you're navigating daily commutes or off-road excursions.

Features

• Provides a full 8-inch front lift for maximum height and clearance.
• Includes four (4) Falcon 2.1 Monotube Shocks tuned specifically for GM HD dynamics.
• Retains torsion bars in their factory position using innovative relocation brackets to preserve ground clearance.
• Fabricated steel Upper Control Arms (UCAs) with corrected ball joint angles for increased travel and durability.
• Precision-engineered cast iron knuckles maintain factory-spec steering and alignment geometry.
• Differential drop brackets and CNC-machined billet aluminum CV axle spacers protect 4WD driveline angles.
• Includes a heavy-duty 3/16-inch steel skid plate for full underbody and differential protection.
• Comes with 12-inch sway bar end links and bump stop extensions for unobstructed suspension articulation.

Notes

• Standard mechanics' tools are required; however, some slight modifications/trimming will be necessary.
• Vehicle alignment, headlamp aim, and Advanced Driver Assistance Systems (ADAS) must be recalibrated after installation.
• Trucks with a factory Tow Package may require custom-length U-bolts if the included standard U-bolts are too short.

Compatibility Notes

• Fits 2020-2025 Chevrolet Silverado and GMC Sierra 2500HD/3500HD 4WD and 2WD models.
• Compatible with Single Rear Wheel (SRW) configurations.
• Does not work with AT4X or ZR2 models.
• Single Cab fitment has not been validated for this system.

Tire Fitment

• Maximum Tire Diameter: 38 inches.
• Recommended Setup (No Rub): 38x12.50 tires on a 9-inch wide wheel with 0 offset.
• Stock 20-inch wheels are compatible, but smaller stock wheels (17/18-inch) may not fit.

Shock Specs

• Shock Type: Falcon 2.1 Monotube Performance Dampers.
• Construction: 6061-T6 aluminum alloy shock bodies for high impact resistance and heat dissipation.
• Technology: Features a 3/4-inch induction hardened chrome plated shaft to resist rock damage and corrosion.
• Performance: Monotube design separating oil and gas to prevent cavitation and fading during heavy use.

Specs

• Lift Height: 8 inches.
• Material: Fabricated 3/16-inch and 1/4-inch steel plate; Ductile iron knuckles.
• Kit Contents: Iron knuckles, drop crossmembers, torsion bar relocation brackets, fabricated UCAs, forged torsion keys, differential drop brackets, CV spacers, skid plate, 12" sway bar links, bump stop extensions, rear blocks, and Falcon 2.1 shocks.