ReadyLIFT 6" Big Lift Kit with Falcon 1.1 Monotube Shocks
Part #: 44-39605
Overview
The ReadyLIFT 6" Big Lift Kit is a complete suspension system designed for 2019–2024 Chevy Silverado 1500 and GMC Sierra 1500 4WD trucks. The system provides approximately 6" of lift while maintaining proper suspension geometry and retaining the factory front struts.
This version includes extended-length Falcon 1.1 Monotube rear shocks for improved stability, control, and ride quality. The additional clearance allows up to 35x12.50 tires on 20x9 wheels with 0 offset without trimming when using ReadyLIFT's recommended wheel and tire setup.
Key Features
- Provides approximately 6" of suspension lift
- Fits 2019–2024 Chevy Silverado 1500 / GMC Sierra 1500 4WD
- Includes Falcon 1.1 Monotube rear shocks
- Heavy-duty cast-iron lift knuckles maintain proper suspension geometry
- 3/16" plate-steel front and rear crossmembers
- Full-width heavy-duty front skid plate
- Boxed and gusseted differential-drop brackets
- Angled and offset strut extensions retain the factory front struts
- 5" fabricated-steel rear lift blocks with integrated bump-stop landings
- Accommodates up to 35x12.50 tires on 20x9 wheels with 0 offset without trimming
- Designed to maintain factory-style ride and handling characteristics
Construction & Design
ReadyLIFT builds the 44-39605 around heavy-duty front suspension components engineered to maintain proper geometry at the increased ride height. The system uses 3/16" plate-steel crossmembers and a full-width skid plate along with 1/4" boxed differential-drop brackets featuring reinforced gussets and a boxed center rib.
Heavy-duty cast-iron lift knuckles maintain factory-style steering and suspension geometry, while angled top-mount strut extensions reposition the factory struts for the increased ride height. A lower strut preload spacer slightly increases spring rate to better support larger aftermarket wheels and tires.
At the rear, fabricated 5" steel lift blocks feature integrated bump-stop landings and an offset locating pin designed to maintain proper pinion angle. Extended-length Falcon 1.1 Monotube shocks complete the rear suspension setup.
Installation & Fitment
Fits: 2019–2024 Chevy Silverado 1500 / GMC Sierra 1500
Drive Type: 4WD
Lift Height: Approximately 6"
Recommended Tire Size: Up to 35x12.50 on 20x9 wheels with 0 offset without trimming
Estimated Installation Time: Approximately 10 hours ±1 hour
Professional Installation: Recommended
Alignment: Required/recommended after installation
Important Fitment Notes:
- Not for Trail Boss, AT4, AT4X or ZR2
- Not for Diesel or Denali applications
- Not compatible with Adaptive Ride Control or Multimatic suspension
- Not compatible with Super Cruise
- Not compatible with rear composite mono-leaf springs
- Single Cab fitment and drivability have not been validated by ReadyLIFT
- ReadyLIFT does not recommend using the Auto 4 Hi feature
- Late-model trucks equipped with round rear U-bolts require additional consideration; ReadyLIFT identifies 67-35150UB for applicable later configurations
What's Included
- Heavy-duty front and rear crossmembers
- Heavy-duty front skid plate
- Heavy-duty top-mount strut extensions
- Sway-bar drop brackets
- Heavy-duty cast-iron lift knuckles
- Fabricated-steel 5" rear lift blocks with integrated bump-stop landings
- Falcon 1.1 Monotube rear shocks
- Required installation hardware
- Installation instructions
Ideal For: Silverado and Sierra 1500 4WD owners looking for a complete 6" suspension system with heavy-duty geometry-correcting components and upgraded Falcon rear shocks for larger tires and improved suspension control.
