KYB 5550007 Suspension Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Titan

KYB Gas-a-Just 5550007 is a monotube suspension shock absorber built as an OE-style replacement for rear applications on select Nissan Titan and Titan XD trucks. It uses separate hydraulic and high-pressure gas chambers to deliver responsive damping, stable control, and a consistent ride during everyday driving and heavier-duty use.

For Nissan Titan owners who tow, haul, or run larger wheels and tires, this rear shock is designed to restore factory handling characteristics while adding quicker response when suspension demand increases. The KYB Gas-a-Just 5550007 also supports vehicles equipped with electronic safety systems by helping the suspension operate as the manufacturer intended.

Key Features

• Monotube OEM replacement shock absorber for rear suspension applications
• Separate oil and nitrogen gas chambers for fade-resistant operation and fast response
• High gas pressure improves steering response and overall control feel
• Triple chrome plated piston rod helps reduce seal wear from fluid leakage
• Dust cover included for added protection
• Dimensions: 15.66 in. compressed length, 25.42 in. extended length, 9.76 in. stroke
• Lower mount type: E2(14X48); upper mount type: E2(14.2X42)

Detailed Description

The Gas-a-just line from KYB is focused on monotube shock construction for vehicles that see more demanding use than standard commuting. This design keeps the hydraulic working area and the gas charge separated by a floating piston, which helps maintain damping consistency and immediate response over rough roads, load changes, and repeated suspension movement. On the Nissan Titan and Nissan Titan XD, KYB 5550007 is a direct rear shock option for restoring controlled ride behavior.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. It is a strong fit for drivers searching for a rear shock absorber for 2020-2024 Nissan Titan, rear, or a rear shock for 2016-2024 Nissan Titan XD, rear. It also fits 2017-2019 Nissan Titan, rear, with Off Road Package.

What It Helps Address

• Excessive rear bounce or oscillation after bumps
• Reduced control when towing or carrying heavier loads
• Soft or inconsistent rear damping on worn suspension
• Delayed response in steering and chassis feel from tired shocks
• Ride instability on trucks with larger tires and wheels

Installation Notes and Tips

Verify rear fitment by year, model, and package before installation. This shock is listed for rear applications only on the vehicles shown. Inspect mounting points, bushings, and surrounding suspension components for wear before replacing the shock absorber, and confirm the compressed and extended lengths match the application.

Quality Assurance

KYB designs the Gas-a-Just series as an OE monotube replacement to help restore original suspension performance characteristics. The monotube layout, high-pressure gas charge, and chrome piston rod construction are selected to support consistent damping and reduced seal wear in demanding truck applications.