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New product upgrade
ReadyLIFT’s Proven 6-Inch F-150 Big Lift Just Got Better
ReadyLIFT’s 6-inch Big Lift Kit for the 2021-2026 Ford F-150 4WD, Part 44-21621, is now upgraded with Falcon 2.1 Monotube rear shocks for greater oil capacity, improved heat management, and more consistent damping and ride control.
Premium monotube rear damping delivers consistent control, stability, and performance.
Engineered crossmembers, lifted knuckles, and tapered strut spacers create an aggressive lifted stance.
Build around a 295/65R20 setup or step up to 37×12.50 tires with the specified wheel setup and trimming.
Part number 44-21621
6-Inch Big Lift with Falcon 2.1 Rear Shocks
Designed for F-150 enthusiasts who want a commanding stance without giving up everyday drivability, this complete suspension system combines 6 inches of front lift, engineered suspension geometry, heavy-duty construction, and premium Falcon rear damping in one integrated package.
- Fits 2021-2026 Ford F-150 4WD
- Falcon 2.1 Monotube rear shocks
- Clearance for up to 37-inch tires
- Heavy-duty crossmembers and lifted knuckles
- Fabricated 4-inch rear blocks
The performance upgrade
More Consistent Control with Falcon 2.1
The upgraded Falcon 2.1 Monotube rear shocks use large 2.3-inch shock bodies to increase oil capacity and improve heat dissipation. That added capacity helps maintain consistent damping performance through everyday driving and demanding conditions.
Heavy-duty 3/4-inch induction-hardened, chrome-plated shafts add durability and are designed to resist rock damage, corrosion, and shaft buckling.
Engineered as a complete system
Heavy-Duty Components from Front to Rear
The 44-21621 is built around the components needed to deliver a full 6 inches of lift while maintaining proper suspension, steering, and driveline geometry.
Heavy-duty front and rear crossmembers work with lifted knuckles to maintain suspension and steering geometry.
Correct the front strut angle for proper suspension operation at the increased ride height.
Full-coverage steel construction adds protection for vulnerable front differential components.
Heavy-duty cam bolts support proper alignment following installation.
Included for F-150 trucks equipped with two-piece drivelines.
Factory-style U-bolts and fabricated blocks complete the lift with a balanced rear stance.
See it in action
ReadyLIFT Ford F-150 Big Lift Video
See the lifted F-150 stance and ReadyLIFT suspension system in the accompanying video.
Big stance. Confident control.
Built for Drivers Who Want More from Their F-150
From the strengthened front suspension structure to the upgraded Falcon rear damping, the 44-21621 brings together the stance, tire clearance, and control expected from a complete ReadyLIFT Big Lift system.
Tire fitment and application
Know Before You Build
The 44-21621 is designed for 2021-2026 Ford F-150 4WD models. Confirm the vehicle configuration and wheel-and-tire setup before installation.
295/65R20 tires on 20×9 wheels with 0 offset, or 37×12.50 tires on 20×9 wheels with 0 offset with trimming.
Single Cab note: Single Cab configurations have not been validated by ReadyLIFT for fitment and drivability.
Does Not Fit
- Diesel-equipped trucks
- F-150 Tremor models
- 2WD models
- 17-inch or smaller wheels
Always confirm vehicle application, wheel clearance, and final tire fitment before installation.
Upgrade your F-150
Go Big with Falcon 2.1 Rear Shock Performance
Get the complete 6-inch ReadyLIFT Big Lift system for the 2021-2026 Ford F-150 4WD, now upgraded with Falcon 2.1 Monotube rear shocks.