KYB 555057 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Pathfinder

The KYB Gas-a-just 555057 is a rear suspension shock absorber engineered for 2005-2012 Nissan Pathfinder applications. It uses a monotube design to deliver quicker response, consistent damping, and improved control for vehicles that tow, carry heavier loads, or run larger wheels and tires.

Key Features

• Fits 2005-2012 Nissan Pathfinder, rear
• Monotube construction separates gas and oil for fade-resistant operation
• Up to 25% more damping performance than original equipment shocks
• High-pressure nitrogen gas chamber adds instant response when conditions change
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Designed specifically for the Nissan Pathfinder suspension layout
• Dust cover included
• Lower mount type: E2(14X48); upper mount type: E2(14X48)

Product Details

KYB Gas-a-just shocks are built around two working chambers: an air-free hydraulic section for control and a separate high-pressure gas section with a floating piston. That layout helps the shock react quickly during normal driving while maintaining consistent damping under load. For Nissan Pathfinder owners looking for a rear shock absorber that supports steering response, ride control, and suspension stability, KYB 555057 is a direct-fit option for the listed model years.

This part cross-references Monroe Shocks & Struts (e.g., 37274) for the same application.

Common Problems This Part Can Address

• Excessive rear bounce after bumps or dips
• Reduced control when towing or carrying cargo
• Soft or delayed suspension response
• Shock fade from heat or aeration during repeated use
• Uneven ride quality with heavier tires and wheels

Installation Notes and Tips

Fits 2005-2012 Nissan Pathfinder, rear. Verify the mount style and compressed/extended length before installation: compressed length 10.47 in., extended length 14.64 in., stroke length 4.17 in. Replace worn shocks in matched axle positions when needed, and inspect surrounding suspension bushings and mounts during service. The included dust cover helps protect the rod surface from road debris.

Quality Assurance

KYB designs the Gas-a-just line with monotube valving and high-pressure gas separation to maintain consistent damping performance. The 555057 is built to support the suspension behavior expected by the vehicle manufacturer on the Nissan Pathfinder.