ReadyLIFT 4 Inch Coil Spring Lift Kit - 2023-2026 Ford F-250 F-350 Super Duty (63-23440)

This ReadyLIFT kit gives the 2023-2026 Ford F-250 and F-350 Super Duty a 4 inch coil spring lift with Falcon 2.1 shocks, radius arm drops and a track bar relocation bracket. ReadyLIFT lists it for 4WD Power Stroke diesel trucks with a single rear wheel and says it clears up to 37 inch tall tires on 9 inch wide wheels. It bolts on with no structural modifications, and the shocks are included.

Key features

• Falcon 2.1 monotube dampers on all four corners, with piggyback rear shocks
• Rear shocks with three adjustable positions for daily, sport or work use
• Radius arm drops to correct caster angle
• Track bar relocation bracket, sway bar drops, bump stop extensions and a carrier bearing drop
• Bolt-on install, no structural modifications

What's included

• 4 inch lift springs
• Falcon 2.1 monotube front shocks and piggyback rear shocks
• Track bar relocation bracket
• Radius arm drops
• Sway bar drops
• Bump stop extensions
• Carrier bearing drop
• Front brake line brackets
• Fabricated rear lift blocks
• Hardware pack

Fitment and compatibility

• Fits 2023-2026 Ford F-250 and F-350 Super Duty
• ReadyLIFT lists it for 4WD Power Stroke diesel trucks with a single rear wheel only; the drop brackets are not designed for dual rear wheels
• Not recommended for 2WD or gas trucks
• Tremor versions will not gain the full 4 inches over stock ride height
• Single cab has not been validated for fitment or drivability
• Trucks with the Onboard Scale option need part number 67-23410, the Ford Super Duty Auto-Leveling Headlight 3.5-6 inch Lift Bracket Kit
• The auto headlight brackets only work with stock radius arms
• Tire recommendations are based on Wheel Pros wheels and Nitto tires; test fit any tire and wheel combination before installing

Specifications

• Brand: ReadyLIFT
• Part number: 63-23440
• Lift: 4 inch
• Max tire: up to 37 inch tall on 9 inch wide wheels
• Shocks included: Yes (Falcon 2.1)
• Estimated install time: 6.5 hours, plus or minus 1 hour

Installation

Allow about 6.5 hours, plus or minus 1, not counting alignment or wheel and tire assembly. ReadyLIFT labels it do-it-yourself but recommends a certified mechanic. Plan on an alignment, check your headlamp aim afterward, and note that trucks with driver-assist systems may need recalibration with dealer tools.

Modifying your suspension can change handling and increase rollover risk during sharp turns or abrupt maneuvers. Always wear your seat belt. ReadyLIFT's page carries a California Proposition 65 notice naming DEHP.