2023-2026 Superduty 4WD 4" Coil Spring Lift Kit w/ Falcon 3.3 Shocks (43-23440)

The ReadyLIFT 4-inch Coil Spring Suspension System is a new lift kit for 2023-2025 Ford Super Duty F250/F350 Power Stroke 4WD trucks. This performance and ride-enhancing kit includes Tubular Radius Arms, a Falcon Dual Steering Stabilizer, and new Falcon 3.3 piggyback shocks. Many consider this 4-inch lift height the 'sweet spot' for Super Duty trucks, allowing for larger tires and widths, providing improved ground clearance, and maintaining excellent everyday usefulness and ride quality both on and off-road.

Features

• Provides a 4-inch Coil Spring Lift Kit.
• Includes four vehicle-specific performance-tuned Falcon 3.3 Monotube Shocks.
• Features heavy-duty Tubular Radius Arms designed to correct the caster angle.
• Includes a Falcon Dual Steering Stabilizer for superior truck stability, which reduces bump steer and improves steering feed.
• Is a direct bolt-on lift kit with no structural modifications required.
• The Falcon 3.3 Fast Adjust Dampers offer a wide range of adjustability with a 3-Position Fast Adjust Knob (Soft, Custom, Firm) and an 8-Position Micro Adjust Dial.
• Includes 4-inch fabricated rear lift blocks.
• Key ingredients include specially engineered coil springs and a track bar relocation bracket.
• Backed by the ReadyGuard Powertrain Warranty.

Notes

• Trucks equipped with the "Onboard Scale" option will require the Auto-Leveling Headlight Bracket (PN: 67-23610).
• Tremor versions will not gain the full 4 inches over stock ride height.
• Vehicle alignment and headlamp aim must be checked and adjusted after product installation.
• If the vehicle is equipped with Advanced Driver Assistance Systems (ADAS), these systems may require recalibration.

Compatibility Notes

• Fits 2023-2025 Ford Super Duty Power Stroke 4WD.
• Kits are designed for diesel applications only.
• Not recommended for 2WD or gas trucks (e.g., 7.3L gas); ReadyLIFT offers spacer kits for gas applications.
• Only for diesel trucks with rear single-wheel only.
• The kit can be used on dually trucks, but the 4-inch DRW block kit must be purchased separately.
• Single Cab configuration has not been validated for fitment and drivability by ReadyLIFT.

Tire Fitment

• Allows for up to 37-inch tall tires.
• Recommended maximum tire size is 37x12.5 inches.
• Recommended wheel specifications are 17 inches and up by 9 inches wide, with a +25 offset / 6 inches backspacing.
• Minor trimming of the front valance may be necessary.

Specs

• Lift Height: 4 inches (coil spring lift).
  
• Rear Block Height: 4 inches.
  
• Shock Type: Falcon Max3 3.3 Monotube Shocks (4 shocks).
  
• Primary Suspension Components: 4-inch Lift Springs, Tubular Radius Arms, Track Bar Relocation Bracket, and Fabricated Rear Lift Blocks.
  
• Additional Components: Falcon Dual Steering Stabilizer, Sway Bar Drops, Bump Stop Extensions, Carrier Bearing Drop, and Front Brake Line Brackets.