KYB KG5522 Shock Absorber - Rear

KYB Gas-a-just Rear Shock Absorber for Classic and Late-Model Applications

The KYB Gas-a-just KG5522 is a rear monotube shock absorber built for drivers who want firmer control, quicker response, and consistent damping. It is engineered for a wide range of applications, including classic rear shock replacement and performance-focused use on vehicles such as the Toyota Sienna, Lincoln Town Car, and Chevrolet Bel Air.

Gas-a-just shocks use separate gas and oil chambers to reduce fade and maintain response under load. The KG5522 part number is designed for vehicles that work, tow, or run larger wheels and tires, while still delivering a controlled ride in normal driving.

Key Features

• Monotube design with separate gas and oil chambers for fade-resistant operation
• Up to 25% more damping performance than original equipment shocks
• Higher gas pressure for quicker steering response and improved control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Dust cover included
• Lower mount type E1 and upper mount type S1
• Compressed length: 13.03 in; extended length: 21.3 in; stroke length: 8.27 in

Product Details

KYB Gas-a-just shocks are part of the Gas-a-just line, which focuses on monotube performance and consistent damping across a broad range of rear suspension applications. The KG5522 is a direct-fit suspension shock absorber for rear use on select Ford, Lincoln, Mercury, Chevrolet, and Toyota vehicles, including 1998-2003 Toyota Sienna rear, 1982-1989 Lincoln Town Car rear, 1970-1980 Lincoln Continental rear, 1965-1978 Ford LTD rear, 1975-1978 Mercury Grand Marquis rear, 1967-1978 Mercury Marquis rear, 1965-1974 Mercury Colony Park rear, 1967-1971 Ford Thunderbird rear, and 1955-1957 Chevrolet Bel Air rear.

This part cross-references Monroe Shocks & Struts 37243 for the same application.

What It Helps Address

• Excessive rear-end bounce or oscillation
• Reduced damping control from worn OE shocks
• Fade during repeated suspension movement
• Loose or delayed steering response from rear suspension instability
• Ride inconsistency on vehicles with heavier tires, wheels, or towing use

Installation Notes and Tips

• Verify rear fitment by year, make, and model before installation.
• Match the upper and lower mount types to the vehicle’s original suspension layout.
• Inspect surrounding bushings, mounts, and hardware for wear before replacing the shock.
• Rear fitment includes applications such as 1998-2003 Toyota Sienna, rear, and 1982-1989 Lincoln Town Car, rear.
• For classic applications like 1955-1957 Chevrolet Bel Air, rear, confirm suspension condition and ride height before final installation.

Quality Assurance

KYB designs Gas-a-just shocks with a high-pressure monotube construction that separates gas and oil for consistent response and reduced fade. The KG5522 uses a triple chrome plated piston rod to help reduce seal wear and support long-term durability in demanding rear suspension service.