KYB SRX4771 Suspension Strut and Coil Spring Assembly - Front

KYB Truck-Plus Leveling Assembly for Ford F-150

The KYB Truck-Plus Leveling Assembly SRX4771 is a front suspension strut and coil spring assembly for select Ford F-150 trucks. It is built for 2014-2020 Ford F-150 front applications with the listed spring door codes and without the Heavy Duty Package or Heavy Duty Suspension, depending on model year.

KYB Truck-Plus Leveling Assembly parts are engineered as corner-specific replacements, not one-size-fits-all assemblies. For a Ford F-150 front strut replacement, SRX4771 helps restore the vehicle’s designed ride height, steering response, and suspension control.

Key Features

• Part number SRX4771
• Front suspension strut and coil spring assembly
• Truck-Plus Leveling Assembly line from KYB
• Compressed length: 18.19 in.
• Extended length: 22.79 in.
• Stroke length: 4.6 in.
• Boot included
• Corner-specific design for the listed Ford F-150 applications

Detailed Description

SRX4771 is a direct-fit front leveling assembly for select Ford F-150 models, including 2014 Ford F-150 front applications except Heavy Duty Suspension, and 2015-2020 Ford F-150 front applications with spring first digit door codes U, T, S, 3, R, or 2 and without the Heavy Duty Package. This part number is part of KYB’s Truck-Plus Leveling Assembly line, which is built to match the specific corner and vehicle configuration rather than using a universal design. The assembly supports the front suspension’s role in carrying vehicle weight, setting ride height, controlling stability, and serving as a steering pivot.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Front-end sag or uneven ride height on a Ford F-150
• Worn strut assembly performance at the front suspension
• Reduced steering precision from a fatigued suspension unit
• Excessive body motion or instability over bumps and turns
• Suspension noise or degraded ride control from aging components

Installation Notes and Tips

Compatible With 2014-2020 Ford F-150 front applications only when the listed spring door code and package requirements are met. Verify the spring first digit door code and confirm the truck does not have the Heavy Duty Package or Heavy Duty Suspension before ordering. Because this is a strut and coil spring assembly, proper suspension service procedures and alignment checks are recommended after installation.

Quality Assurance

KYB designs Truck-Plus assemblies as vehicle-specific replacements with corner-specific part numbers to help restore original suspension behavior on the listed Ford F-150 applications. SRX4771 is built to support the front suspension functions that affect ride height, steering, stability, and related vehicle systems.