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4" COIL SPRING SUSPENSION SYSTEM WITH FALCON 2.1 SHOCKS - FORD SUPER DUTY DIESEL 4WD 2023-2024 F-350 And F-250
- Fits 2023-UP Ford Super Duty Power Stroke 4WD.
- 4" Coil Spring Suspension System
- Vehicle-specific performance-tuned Falcon 2.1 monotube dampers on all four corners.
- Rear adjustable 3-position Falcon 2.1 shocks tune for daily, sport, or work duties.
- Radius Arm Drops for correct caster angle in kit.
- Bolt-on lift kit - no structural modifications required.
- Allows for up to 37" tall tires on 9" wide wheels with +18 offset.
- Diesel trucks with rear single-wheel only.
***Trucks equipped with the "Onboard Scale" option will require the Auto-Leveling Headlight Bracket.***
PN: 67-23410 - Ford Super Duty Auto-Leveling Headlight 3.5''-6'' Lift Bracket Kit
NOTE: Tremor versions will not gain the full 4 inches over stock ride height. Not recommended for 2WD or gas trucks. Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT. New auto headlight brackets are only for stock radius Arms.
- California Residents: Prop 65 WARNING
Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov
- Fits 2023-UP Ford Super Duty Power Stroke 4WD.
- 4" Coil Spring Suspension System
- Vehicle-specific performance-tuned Falcon 2.1 monotube dampers on all four corners.
- Rear adjustable 3-position Falcon 2.1 shocks tune for daily, sport, or work duties.
- Radius Arm Drops for correct caster angle in kit.
- Bolt-on lift kit - no structural modifications required.
- Allows for up to 37" tall tires on 9" wide wheels with +18 offset.
- Diesel trucks with rear single-wheel only.
***Trucks equipped with the "Onboard Scale" option will require the Auto-Leveling Headlight Bracket.***
PN: 67-23410 - Ford Super Duty Auto-Leveling Headlight 3.5''-6'' Lift Bracket Kit
NOTE: Tremor versions will not gain the full 4 inches over stock ride height. Not recommended for 2WD or gas trucks. Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT. New auto headlight brackets are only for stock radius Arms.
ReadyLIFT Suspension is pleased to announce A new Super Duty Suspension System. We are now shipping our 4" Coil Spring Lift Kit, #63-23440, fitting 2023-2024 Ford Super Duty F250/F350 4WD Power Stroke® trucks. The new 4” lifts include front and rear Falcon 2.1 Falcon shocks. This kit is designed to improve stance, performance, and capability and includes everything necessary to clear larger wheels and tires. With vehicle-specific performance-tuned Falcon 2.1 dampers on all four corners, these lift kits provide a better-than-factory feel. Falcon Performance Shocks improve performance and comfort regardless of the terrain. The versatility of these systems makes them ideal for daily driving, off-road excursions, and tow/haul duties. This gives Super Duty owners an excellent alternative for lifting their trucks to fit larger tires. The coil spring system allows for increased tire sizes and widths along with providing improved ground clearance on a head-turning stance! Many consider this lift height the ’sweet spot’ for Super Duty driving dynamics and maximum tire size while maintaining everyday usefulness.
This optimum lift height allows for up to 37" tall tires. The coil spring kit delivers a great ride and handling performance! The key ingredients to improving Super Duty ride and handling are the new, specially engineered coil springs teamed with Falcon 2.1 shocks and a track bar relocation bracket! This combination is more than just a lift kit, this is a performance and ride-enhancing kit that will really delight consumers with how well it rides and performs both on and off-road.
Features & Benefits:
· 4" Coil Spring Lift Kit with Vehicle-specific performance-tuned Falcon Shocks.
· Radius Arm Drops for correct caster angle
· Bolt-on lift kit - no structural modifications required.
· Allows for up to 37" tall tires on 9" wide wheels with +18 offset.
· Diesel trucks with rear single-wheel only.
· Falcon 2.1 monotube dampers on all four corners.
o Improved dynamic roll control and low-speed damping.
o Dramatic improvement in on-road comfort and off-road performance.
o Optimized fitment for unobstructed suspension travel and articulation.
o “High-Value Performance” is the driving force behind our new vehicle-specific Falcon shocks.
o Falcon shock absorber systems are tuned for comfort with predictive handling, control, and stability on-road and off-road.
o Rear adjustable 3-position Falcon 2.1 shocks tune for daily, sport, or work duties.
NOTE: Tremor versions will not gain the full 4 inches over stock ride height. Kits designed for diesel applications only. Not recommended for 2WD or gas trucks. Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT.
Recommended tire size: 37" - 12.5"
Recommended wheel: 17" and up x 9" wide, +25 offset / 6" backspacing (minor trimming of the front valance may be necessary)
Tire Size Note: ReadyLIFT wheel and tire fitment recommendations are typically based on Wheel Pros wheels and Nitto tires. Due to product differences among tire manufacturers, tire specifications and dimensions including, but limited to, overall diameter, rolling diameter, tread width, aspect ratio, lug pattern, sidewall construction and inflation pressure, will vary meaningfully by tire and wheel manufacturer. Every tire and wheel combination should be test fit prior to installation. Consult your local installer to learn more about the right tire fitment for your application.
Ride Quality Note: When lifting a vehicle and installing aftermarket wheels and tires, a tire manufacturer's construction and material quality can alter vehicle ride quality. When increasing a vehicle wheel and tire size, most larger aftermarket truck and SUV tires are 10-ply (or more) E tires compared to typical OEM 6-ply C tires. This more rigid sidewall construction increases the perception of suspension stiffness often described as ride harshness. The ride, handling, traction, noise, fuel economy, and wear differences between All-Season, All-Terrain, Mud-Terrain, or Trail-Terrain type tires can be significant. Please take into account tire and wheel choice will generally have a meaningful impact on the ride & handling experience.
4" Lift Springs
Falcon 2.1 Monotube Front and Piggyback Rear Shocks
Track Bar Relocation Bracket
Radius Arm
Dual Steering Stabilizer
Sway Bar Drops
Bump Stop Extensions
Carrier Bearing Drop
Front Brake Line Brackets
Fabricated Rear Lift Blocks
Hardware Pack
SAEJ2492 WARNING: By installing this product, you acknowledge that the suspension of this vehicle has been modified. As a result, this vehicle may handle differently than factory-equipped vehicles. As with any vehicle, extreme care must be used to prevent loss of control or rollover during sharp turns or abrupt maneuvers. Always wear seat belts, and drive safely, recognizing that reduced speeds and specialized driving techniques may be required. Failure to drive this vehicle safely may result in serious injury or death. Do not drive this vehicle unless you are familiar with its unique handling characteristics and are confident of your ability to maintain control under all driving conditions. Some modifications (and combinations of modifications) are not recommended and may not be permitted in your state. Consult your owner's manual, the instructions accompanying this product, and state laws before undertaking these modifications. You are responsible for the legality and safety of the vehicle you modify using these components.
INSTALLATION ALIGNMENT NOTE: Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle.
INSTALLATION HEADLAMP AIM NOTE: In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system.
INSTALLATION ADVANCED DRIVER ASSISTANCE SYSTEMS (ADAS) NOTE: If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS. You may incur additional costs to adjust ADAS systems.
Have a certified mechanic do it for you!
Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov 
TIRE/WHEEL SIZING GUIDE
