KYB 5550008 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Nissan Titan

The KYB Gas-a-just 5550008 is a rear suspension shock absorber built for Nissan Titan trucks that need firmer control than a standard twin-tube design. It uses a monotube layout with separate gas and oil chambers to deliver quick response, consistent damping, and reduced fade during demanding driving.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube construction separates gas and oil for fade-free operation
• High-pressure nitrogen chamber adds instant response when load or road conditions change
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Engineered specifically for Nissan Titan rear suspension applications
• Improves steering response and helps maintain electronic safety system performance
• Dust cover included

Product Details

Gas-a-just is KYB’s performance-oriented shock line for trucks that work, tow, or run larger wheels and tires. The 5550008 uses an air-free hydraulic working area for control and a separate high-pressure gas chamber for ride comfort and fast damping adjustment. That design helps the shock react quickly to changing road inputs while maintaining consistent performance under heavier use. This part cross-references Nissan E6200EZ31B for the same application.

Fits 2020-2024 Nissan Titan, rear. Fits 2017-2019 Nissan Titan, rear. This KYB 5550008 rear shock is a direct-fit option for Nissan Titan owners looking to restore suspension control without changing the vehicle’s intended rear shock layout.

Common Problems This Shock Can Address

• Excessive rear bounce after bumps or dips
• Reduced control when towing or carrying heavier loads
• Soft or delayed shock response on rough pavement
• Fluid leakage from worn shock seals
• Loss of damping consistency from aeration or fade

Installation Notes and Tips

Verify rear fitment by model year and package before ordering. This shock fits 2020-2024 Nissan Titan rear applications without the Off Road Package, and 2017-2019 Nissan Titan rear monotube performance upgrade applications without the Off Road Package. Confirm the compressed length, extended length, and mount types against the original unit before installation. Professional installation and a post-repair suspension inspection are recommended.

Quality Assurance

KYB designs the Gas-a-just line with application-specific valving and monotube construction to maintain consistent damping performance in demanding truck use. The 5550008 is built to support the rear suspension geometry and control characteristics specified for the Nissan Titan platform.