Rancho RS551774 Suspension Strut and Coil Spring Assembly - Front

Rancho RS5000X Loaded Front Strut

The Rancho RS5000X Loaded strut assembly is a complete front suspension solution for late-model trucks and SUVs. It restores factory ride height while improving on-road control and off-road response through Rancho Cross Tuned technology.

Built for 2004-2008 Ford F-150 and 2006-2008 Lincoln Mark LT front applications, this Rancho RS551774 assembly simplifies replacement by combining the strut and coil spring components into one unit. It is gas charged and engineered to meet strict durability requirements after on- and off-road ride testing.

• Loaded front strut assembly for direct suspension service
• Restores factory ride height on Ford F-150 and Lincoln Mark LT front suspension
• Cross Tuned technology for balanced handling on pavement and rough roads
• Gas charged design for consistent damping response
• Performance-grade construction for daily driving and light off-road use
• Mounting hardware included

Fitment and Application Details

• Fits 2004-2008 Ford F-150, front
• Fits 2006-2008 Lincoln Mark LT, front

Use RS551774 when replacing a worn front strut assembly on a Ford F-150 or Lincoln Mark LT and you want a complete unit that supports ride height restoration and predictable suspension behavior. This part cross-references Monroe Shocks & Struts (e.g., 171362) for the same application.

Common Problems This Part Can Address

• Front-end sag from a worn strut and spring assembly
• Excessive bounce or reduced damping control
• Noisy or unstable front suspension operation
• Uneven ride height after suspension wear
• Reduced handling response on-road and off-road

Installation Notes and Tips

Verify front suspension fitment by year and model before installation. Because this is a loaded strut assembly, it reduces the need to transfer spring components from the original unit and can streamline the replacement process. Inspect related front suspension parts such as mounts, control arms, and alignment settings during service.

Quality Assurance

Rancho engineers the RS5000X Loaded strut assembly to strict durability standards and validates it through on-road and off-road ride testing. Part number RS551774 is built for performance-focused suspension service on the listed Ford and Lincoln front applications.