KYB 555053 Suspension Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Ford F-350 Super Duty

The KYB Gas-a-just 555053 is a rear monotube shock absorber built for 2005-2010 Ford F-350 Super Duty trucks. It uses separate gas and oil chambers for quick response, consistent damping, and reduced fade during demanding driving.

Key Features

• Fits 2005-2010 Ford F-350 Super Duty, rear
• Monotube design delivers up to 25% more damping performance than original equipment shocks
• High-pressure nitrogen gas and hydraulic separation support fade-free operation
• Designed for Super Duty Ford trucks that work, tow, and run larger, heavier tires and wheels
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Higher gas pressure improves steering response and suspension control
• Dust cover included
• Part number: 555053

Product Details

KYB Gas-a-just shocks are engineered for trucks that see heavier loads and more demanding road conditions. The monotube construction keeps the gas and oil in separate working chambers, which helps the shock respond quickly and maintain control without the performance loss associated with aeration. On a Ford F-350 Super Duty rear suspension, that means more stable damping under load, better control over rough pavement, and more consistent handling when towing or carrying weight. Part number 555053 is also a direct search match for shoppers comparing KYB 555053 against OE-style replacement options.

This part cross-references Monroe Shocks & Struts 911265 and Gabriel G64010 for the same application.

Common Problems This Shock Can Address

• Excessive rear bounce after bumps or dips
• Reduced control when towing or hauling heavy loads
• Shock fade from repeated suspension movement
• Loose or delayed steering response caused by worn rear damping
• Uneven ride quality on trucks with larger tires and wheels

Installation Notes and Tips

Fits 2005-2010 Ford F-350 Super Duty, rear. Verify compressed length, extended length, and mount style before installation: compressed length 14.25 in., extended length 22.08 in., stroke length 7.83 in., lower mount type E2(12X38), upper mount type E1. The dust cover is included, and the shock uses an R-stop with no internal rebound spring and no B-stop. Always inspect related suspension components, mounting points, and bushings before replacing the shock absorber.

Quality Assurance

KYB designs Gas-a-just monotube shocks with performance-focused valving and durable piston rod construction for demanding truck use. The product line is built to maintain consistent damping response and support the suspension behavior expected by the vehicle manufacturer.