4.5" 2023-2026 Ford F250 / F350 Super Duty 4WD Coilover Conversion Lift Kit by Rough Country

400158 / 400159 Rough Country 4.5-inch Coilover Conversion Lift Kit is designed for Ford F-250 and F-350 Super Duty trucks, delivering increased ground clearance, aggressive styling, and premium suspension performance both on and off-road. Engineered for drivers who demand improved ride quality and enhanced damping control, this system allows clearance for up to 35-inch tires while maintaining smooth handling and everyday drivability.

At the center of this system are high-performance Vertex coilovers featuring a 2.5-inch-diameter monotube piston design with remote reservoirs for superior heat dissipation and damping consistency. The remote reservoir design provides significantly greater fluid capacity than traditional shocks, helping to maintain suspension performance under heavy loads, on rough terrain, and during extended off-road use. It also includes a secondary V2 front monotube shock, designed to improve stability, ride control, and suspension responsiveness. Built for durability and long-term reliability, this kit features heavy-duty fabricated 1/4-inch coilover mounts and radius arm drop brackets to correct caster geometry and maintain a factory-like steering feel. Heavy-duty fabricated rear lift blocks provide greater strength than cast alternatives, while an integrated anti-axle-wrap design helps preserve ride quality and reduce unwanted axle movement during acceleration, towing, or off-road use.

This Rough Country coilover conversion system offers a straightforward bolt-on installation with no cutting or drilling required. Top-mounted reservoir brackets provide clean, secure reservoir placement, while the front-to-rear leveling design eliminates factory rake for a more balanced and aggressive stance. Choose V2 or Vertex rear shocks for complete four-corner suspension performance, this 4.5-inch lift kit delivers the ride quality, control, and off-road capability expected from a premium Super Duty suspension upgrade.

Features and Benefits:

• 400158 Rough Country 4.5-inch coilover conversion lift kit for Ford F-250 and F-350 Super Duty
• Provides clearance for up to 35-inch tires
• Vertex remote reservoir coilovers improve ride quality and damping control
• 2.5-inch monotube coilover design with external reservoirs for increased fluid capacity
• Secondary V2 front monotube shocks improve stability and suspension control
• Choose V2 or Vertex rear shocks (see options)
• Heavy-duty fabricated 1/4-inch coilover mounts for increased strength
• Radius arm drop brackets correct caster geometry and maintain handling
• Heavy-duty fabricated rear lift blocks offer superior durability over cast blocks
• Anti-axle wrap rear blocks reduce unwanted axle movement and preserve ride quality
• Front-to-rear leveling design eliminates factory rake
• Top-mounted reservoir brackets provide secure reservoir placement
• 100% bolt-on installation with no cutting or drilling required
• Improves off-road capability while maintaining predictable on-road handling
• Backed by Rough Country's limited lifetime replacement warranty