KYB SRX4171 Suspension Strut and Coil Spring Assembly - Front

KYB Truck-Plus Leveling Assembly for F-150

The KYB Truck-Plus Leveling Assembly SRX4171 is a front suspension strut and coil spring assembly for select Ford F-150 applications. It is built for trucks that need front-end ride height correction while maintaining the vehicle’s original suspension geometry and steering response.

For 2009-2013 Ford F-150 front applications, this KYB Truck-Plus Leveling Assembly is engineered as a corner-specific replacement rather than a universal strut solution. The SRX4171 is designed around the demands of a front strut assembly, including vehicle weight support, ride height control, steering pivot function, stability management, and interaction with electronic crash avoidance systems.

Key Features

• Part number SRX4171 for select Ford F-150 front suspension applications
• Truck-Plus Leveling Assembly for front ride height correction
• Corner-specific design for application-focused fitment
• Compressed length: 18.22 in.
• Extended length: 22.48 in.
• Stroke length: 4.26 in.
• Boot included
• Fits 2009 Ford F-150, front, w/o Heavy Duty Suspension
• Fits 2010 Ford F-150, front, w/ Standard Package or w/ Off Road Package
• Fits 2011-2013 Ford F-150, front, w/o Heavy Duty Suspension

Product Details

KYB’s Truck-Plus Leveling Assembly line is focused on restoring front suspension performance with vehicle-specific engineering. The SRX4171 is built for the Ford F-150 platform and uses a corner-specific part number approach to match the intended suspension setup more closely than multi-vehicle universal assemblies. This matters on a front strut assembly because it directly affects ride height, steering feel, stability, and the operation of driver-assist systems that rely on suspension geometry.

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

Common Issues This Part Can Address

• Front ride height that needs leveling on a Ford F-150
• Worn or tired front strut assembly performance
• Reduced steering precision from suspension wear
• Front-end instability over bumps and uneven pavement
• Suspension geometry concerns after replacing a front assembly

Installation Notes and Tips

Verify exact vehicle configuration before ordering. This SRX4171 is for the front position only and is listed for 2009 Ford F-150 without Heavy Duty Suspension, 2010 Ford F-150 with Standard Package or Off Road Package, and 2011-2013 Ford F-150 without Heavy Duty Suspension. Because this is a strut and coil spring assembly, proper suspension service procedures and alignment checks are recommended after installation.

Quality Assurance

KYB is known for application-specific suspension engineering, and the Truck-Plus Leveling Assembly line is built to match the needs of the listed Ford F-150 fitments. The SRX4171 is designed with the dimensions and front suspension requirements needed for these confirmed applications.