KYB 554388 Shock Absorber - Rear

Overview of KYB Gas-a-just Suspension Shock Absorber

The KYB Gas-a-just 554388 suspension shock absorber is engineered for Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to restore ride quality and handling, this shock absorber features precise dimensions and mounting types to ensure proper fit and function.

• Compressed Length: 16.3 inches
• Extended Length: 26.5 inches
• Stroke Length: 10.20 inches
• Lower Mount Type: E2 (12x38)
• Upper Mount Type: E1
• Includes Dust Cover for protection
• No internal rebound spring, B-stop, or R-stop

Detailed Product Description

The KYB Gas-a-just 554388 shock absorber is specifically designed for the suspension systems of Ford F-250 Super Duty and F-350 Super Duty models. With a compressed length of 16.3 inches and an extended length of 26.5 inches, it provides a stroke length of 10.20 inches, allowing for effective damping and suspension travel. The lower mount uses an E2 (12x38) style, while the upper mount is an E1 type, ensuring compatibility with the factory mounting points on these trucks. The included dust cover helps protect the shock shaft from dirt and debris, extending the service life of the component. This shock absorber does not include an internal rebound spring or bump stops (B-stop and R-stop), which aligns with the original equipment design for these models.

About the Gas-a-just Product Line

The KYB Gas-a-just line is designed to provide a direct replacement shock absorber that matches the original equipment specifications for gas-charged shocks. This product line focuses on restoring the vehicle's original handling and ride comfort by using gas pressure technology to reduce shock fade and improve response. The 554388 part is part of this line, offering a balance of performance and durability tailored for heavy-duty Ford trucks.

Common Applications and Problem Solving

• Restores proper suspension damping on Ford F-250 Super Duty and F-350 Super Duty
• Reduces excessive bouncing and body roll during driving
• Improves vehicle stability under load or towing conditions
• Eliminates noise and harshness caused by worn shock absorbers
• Prevents premature tire wear due to suspension issues

Installation Notes and Tips

When installing the KYB Gas-a-just 554388 shock absorber, ensure the vehicle is securely lifted and supported. Verify the upper and lower mount types (E1 upper, E2 12x38 lower) match the vehicle’s mounting points. It is recommended to replace shocks in pairs to maintain balanced suspension performance. Inspect related suspension components such as bushings and mounts for wear during installation. The included dust cover should be positioned correctly to protect the shock shaft from contaminants.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just 554388 shock absorber to meet or exceed OEM standards for fit, form, and function. The product undergoes rigorous testing to ensure durability and consistent performance. While specific warranty details are not provided here, KYB typically offers a limited warranty covering defects in materials and workmanship. Consult KYB or the product documentation for exact warranty terms.