HomeShopSuspensionReadylift 4″ Coil Spring Lift Kit w/Falcon Shocks and Radius Arms | 17-22 Ford F-250/F-350 Diesel 6.7L 4WD


Part Number

Brand: ReadyLIFT



ReadyLIFT Suspension is now offering our first 4″ Coil Spring Lift Kit fitting Ford Super Duty F250/F350 4WD Power Stroke trucks with new Tubular Radius Arms. The kit includes front and rear Falcon 1.1 Monotube series performance shocks with our venerable front track bar relocation bracket, tubular radius arms, and rear fabricated blocks. This delivers an excellent alternative for lifting a F250/F350 Super Duty 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 practicality.
The all-new Radius Arms are designed to correct the suspension geometry on lifted models. These new radius arms are heavy duty and are built to handle the use and abuse demanded out of Super Duty trucks. The new radius arms hold up to the abuse and surpass the factory radius arms and support gussets. The arms are formed inward, allowing for additional tire clearance, and providing the ability to install oversized tires. The direct bolt-on design promotes quick and easy installation. 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 your ride are the new specially engineered coil springs teamed with Falcon shocks and track bar relocation! 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.
The ReadyLIFT 4″ Coil Spring lift kit system for Ford Super Duty trucks also includes model-specific brake line extension brackets, our time-tested bump-stop extension brackets, and new front sway bar frame mount extension brackets to keep the factory sway bar in the proper position. If you want tough looks and a smooth but controlled ride, then you want the new Super Duty 4″ Coil Spring Suspension Kit System.


  • 4″ Coil Spring Lift Kit With (4) Monotube Falcon 1.1 Shocks.
  • Eye-catching HD Tubular Radius Arms helps to 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.


  • Tremor versions will not gain the full 4 inches over stock ride height. Not recommended for 2WD or gas trucks. 2017-2019 ride height may be slightly lower. Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT.
  • Diesel trucks with rear single-wheel only.

What’s Included

  • 4″ Lift Springs
  • Falcon 1.1 Monotube Front and Rear Shocks
  • Track Bar Relocation Bracket
  • Radius Arm
  • Sway Bar Drops
  • Bump Stop Extensions
  • Carrier Bearing Drop
  • Front Brake Line Brackets
  • Fabricated Rear Lift Blocks
  • Hardware Pack


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