2025-2026 GM 1500 6" Big Lift Kit w/ Falcon 2.1 Shocks (44-35621)

Description

ReadyLIFT's reengineered 6" Big Lift Kit for the 2025-2026 Chevy Silverado 1500 and GMC Sierra 1500 is built around the larger front differential GM introduced for 2025. Redesigned steering knuckles improve turning radius, factory Auto 4WD is retained and revised geometry helps prevent driveline vibration. Top mount strut extensions keep the factory strut, and fabricated rear blocks with integrated bump stop landings lift the rear, paired with new Falcon 2.1 Monotube rear shocks.

Part Number: 44-35621 (supersedes 44-35620)

Features

• Top mount strut extensions maintain factory geometry and retain the factory strut
• 3/16" thick steel plate cross members and skid plate
• Anti-torsion boxed and gusseted plate steel differential drop brackets
• Fabricated steel 5" rear lift blocks with integrated bump stop landings and offset pin for proper pinion angle
• Falcon 2.1 Monotube extended-length rear shocks (2.3" aluminum body, 3/4" shaft)
• Redesigned steering knuckles for an improved turning radius
• Retains factory Auto 4WD functionality
• Revised suspension geometry helps prevent driveline vibration
• Includes ReadyGuard Powertrain Warranty

Tire Fitment:

• Up to 35" tires on 9" wide wheels with 0 offset, no trimming
• Max 35x12.50 (325/60R20) on 20x9 wheels with 4.5" backspacing

Notes

• Use of Auto 4 Hi feature not recommended
• Not for use on Trail Boss, AT4, AT4X, ZR2, Diesel or Denali models
• Not compatible with Adaptive Ride Control (ARC) or Multimatic suspension
• Not compatible with rear mono-leaf springs
• Not compatible with Super Cruise
• Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT