2017-2022 Powerstroke 4" Coil Spring Lift Kit w/ Falcon Max 3.3 Shocks (43-27440)

Fits

This 4" Coil Spring Kit comes with Tubular Radius Arms, Falcon Dual Steering Stabilizer, and the new Falcon 3.3 piggyback shocks, making it the go-to option for truck owners looking to fit larger tires without compromising ride quality or factory geometry. With increased ground clearance and superior support that doesn't add extra stress on other suspension components, this lift height is widely considered the "sweet spot" for maximum tire size while still being practical for everyday use.

This killer combination of specially engineered coil springs, Falcon 3.3 shocks, and tubular Radius Arms not only correct the lifted suspension geometry but outperform OEM factory arms and support gussets, giving you a badass curb appeal and superior suspension handling and articulation.

Part Number: 43-27440

• 4" Coil Spring Lift Kit with Vehicle-specific performance-tuned Falcon Shocks      
• Tubular Radius Arms help to correct the caster angle in         
• Falcon Dual Steering Stabilizer         
• Bolt-on lift kit - no structural modifications required   
• Allows for up to 37" tall tires on 9" wide wheels with +18 offset  
  
• Falcon 3.3 monotube dampers on all four corners
• 3.3 Fast Adjust Dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference
• 3-Position Fast Adjust Knob for Soft, Custom, and Firm Compression. Soft mode allows a partial bypass of the main piston for a softer ride
• 8-Position Micro Adjust Dial offers refined damping adjustments
• Reservoir design increases nitrogen to oil ratio for consistent damping over wide temperature ranges
• Hard Anodized Large Bore 6061-T6 Aluminum Shock Body for impact and corrosion resistance as well as increased oil volume for consistent performance.
• VOD (Volume Optimized Damping) features a digressive linear piston for quicker ramp-up for reduced body roll and an overall increase in damping to reduce bottom out when pushed to the limit.
• Red Line high VI shock oil for consistent performance across all temperatures from -50F to 450F with anti-wear and lubricity agents.

Includes:

• 4" Lift Springs
• Falcon 3.3 Monotube Front and 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

Tire Fitment

• 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)

• 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
• Diesel trucks with rear single-wheel only

• ReadyLIFT Suspension Inc. and/or Dirty Diesel Customs are NOT responsible for any damage or failure resulting from improper installation.  
  
• Click Here to view installation instructions