KYB SR4201K Suspension Strut and Coil Spring Assembly - Front

KYB Truck-Plus Leveling Assembly for Frontier

The KYB Truck-Plus Leveling Assembly SR4201K is a front suspension strut and coil spring assembly for the 2005-2021 Nissan Frontier. It is engineered to raise front ride height by approximately 2.5 inches while maintaining the vehicle’s designed suspension behavior.

Built for the 2WD Nissan Frontier, this assembly combines KYB’s Excel-G strut with application-specific damping valves and a stronger steel outer shell. The corner-specific design supports proper ride height, steering response, vehicle stability, and operation of electronic safety systems such as ESC and ABS.

Key Features

• Front leveling assembly for the Nissan Frontier
• Raises ride height approximately 2.5 inches
• Includes a KYB Excel-G strut
• Uses a stronger steel outer shell for added durability
• Application-specific precision damping valves
• Pre-assembled for professional installation results
• Assembled in the USA
• Recognized with a 2021 industry new-product award
• Engineered to support vehicles with electronic safety systems

Product Details

KYB’s Truck-Plus Leveling Assembly line is built around corner-specific engineering rather than a one-size-fits-all design. For the Nissan Frontier, SR4201K is intended to restore front-end stance and suspension control while preserving the handling characteristics expected from the original setup. Because a strut assembly affects vehicle weight support, ride height, steering pivot action, and stability, precise fitment matters. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Front-end rake or uneven stance on a 2WD Nissan Frontier
• Worn or weakened front strut performance
• Reduced steering precision from aging suspension components
• Excessive body motion or instability over road inputs
• Suspension service needs tied to ESC or ABS-equipped vehicles

Installation Notes

Fits 2005-2021 Nissan Frontier, front. Verify 2WD application and compare the original strut assembly before installation. Because this is a pre-assembled strut and coil spring unit, it is designed to simplify replacement and help reduce assembly time. Always confirm alignment after installation and inspect related suspension components for wear.

Quality Assurance

SR4201K is manufactured by KYB, a brand known for OEM-quality shocks and struts. The Truck-Plus Leveling Assembly is assembled in the USA and built with application-specific damping and corner-specific engineering to support consistent suspension performance on the Nissan Frontier.