ReadyLIFT 4 Inch Coil Spring Lift Kit - 2017-2022 Ford F-250 F-350 Super Duty (49-27421)

This ReadyLIFT kit gives the 2017-2022 Ford F-250 and F-350 Super Duty a 4 inch coil spring lift with four Falcon 1.1 monotube shocks and heavy-duty tubular radius arms that help correct caster angle. ReadyLIFT lists it for 4WD Power Stroke diesel trucks with single rear wheels and says it allows up to 37 inch tall tires on 9 inch wide wheels. It is a bolt-on kit with no structural modifications.

Key features

• Heavy-duty tubular radius arms that help correct caster angle
• Four Falcon 1.1 monotube shocks, front and rear
• Model-specific brake line extension brackets, bump stop extension brackets and front sway bar frame mount extension brackets
• Bolt-on install, no structural modifications
• Shock build: 2-1/8 inch body, 6061-T6 aluminum alloy billet piston, 1/2 inch induction-hardened chrome-plated shaft, progressive microcellular foam bump stops

What's included

• 4 inch lift springs
• Falcon 1.1 monotube front and rear shocks
• Radius arms
• Track bar relocation bracket
• Sway bar drops
• Bump stop extensions
• Carrier bearing drop
• Front brake line brackets
• Fabricated rear lift blocks
• Hardware pack

Fitment and compatibility

• Fits 2017-2022 Ford F-250 and F-350 Super Duty
• ReadyLIFT lists it for 4WD Power Stroke diesel trucks with single rear wheels only
• Not recommended for 2WD or gas trucks
• Tremor versions will not gain the full 4 inches over stock ride height
• 2017-2019 trucks: ride height may be slightly lower
• Single cab has not been validated for fitment and drivability by ReadyLIFT
• Tire recommendations are based on Wheel Pros wheels and Nitto tires; test fit any tire and wheel combination before installing
• Larger 10-ply E-rated tires typically ride stiffer than OEM 6-ply C-rated tires

Specifications

• Brand: ReadyLIFT
• Part number: 49-27421
• Lift: 4 inch
• Max tire: up to 37 inch tall on 9 inch wide wheels
• Shocks included: Yes (four Falcon 1.1 monotube)
• Estimated install time: 4.5 hours, plus or minus 0.5 hour

Installation

Allow about 4.5 hours, plus or minus 0.5, not counting alignment or wheel and tire assembly.

Modifying your suspension can change handling and increase rollover or loss-of-control risk in sharp turns or abrupt maneuvers, and some modifications may not be permitted in some states. Always wear your seat belt. California Proposition 65: this product can expose you to chemicals including DEHP, which California lists as causing cancer and birth defects or other reproductive harm.