2025-2026 GM 1500 4.0" SST2.1 Lift Kit w/ Premium Falcon 2.1 Strut Shocks (62-35440)

The ReadyLIFT 4-inch SST2.1 Lift Kit for 2025 Silverado/Sierra 1500 trucks is a comprehensive suspension solution that delivers a commanding stance without the complexity of a full subframe drop. By including heavy-duty fabricated upper control arms, this system maintains proper ball joint angles and alignment specs. The kit utilizes Falcon 2.1 performance shocks to provide a significant upgrade in damping over the factory units, allowing for the fitment of 35-inch tires while ensuring the truck retains its refined highway manners and towing stability.

Features

• Heavy-duty fabricated steel upper control arms improve strength and provide proper ball joint pivot angles for the 4-inch lift.
• Falcon 2.1 Monotube performance shocks are specifically valved for the GM 1500 platform to provide superior damping.
• Front strut extensions provide 4 inches of lift while retaining the use of factory front struts.
• Differential drop spacers are included to maintain proper CV axle angles and reduce drivetrain wear.
• Fabricated rear lift blocks provide 2 inches of lift to achieve a perfectly leveled stance.
• CNC-machined billet aluminum spacers ensure a precise fit and long-lasting durability.
• Maintains factory turning radius and overall driving dynamics.

Notes

• Vehicle alignment and headlamp aim must be adjusted after installation to ensure safety and proper tire wear.
• Estimated installation time is approximately 4 to 5 hours excluding alignment.
• Some minor trimming may be required depending on the specific tire and wheel combination.

Compatibility Notes

• Fits 2025 Chevrolet Silverado and GMC Sierra 1500 4WD models.
• Not compatible with trucks equipped with Super Cruise, MagneRide, or factory Air Ride suspension.
• Does not fit Chevy Silverado ZR2 or GMC Sierra AT4X models.
• Designed for use with Single Rear Wheel (SRW) configurations.

Tire Fitment

• Maximum Tire Diameter: 35 inches.
• Recommended Setup: 35x11.50 or 295/60R20 tires on a 9-inch wide wheel with a +18 offset.
• Stock wheels can be reused with tires up to 11.5 inches wide.

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 control at all speeds.
• Fluid: Uses Red Line high VI shock oil for consistent performance in extreme temperature ranges.

Specs

• Front Lift Height: 4.0 inches.
• Rear Lift Height: 2.0 inches.
• Kit Contents: Front Strut Spacers, Fabricated Upper Control Arms, Falcon 2.1 Shocks (Rear), Differential Drop Spacers, and 2-inch Rear Blocks.