KYB 551122 Suspension Strut - Front

KYB Gas-a-just Front Strut for Lexus LS460

The KYB Gas-a-just 551122 is a front suspension strut built as an OE-style monotube replacement for the Lexus LS460. It is designed to restore original handling response while adding the firmer control expected from a high-pressure gas strut.

Compatible with 2007-2017 Lexus LS460, front, this KYB Gas-a-just strut is a direct-fit suspension service part for vehicles without air suspension.

Key Features

• OE monotube replacement for the original front strut design
• Separate hydraulic and high-pressure nitrogen chambers for responsive damping
• High-pressure monotube construction helps maintain fade-resistant operation
• Triple chrome plated piston rod helps reduce seal wear from fluid leakage
• Quicker steering response from the higher gas pressure design
• Supports vehicles that work, tow, or use larger and heavier tires and wheels
• Helps maintain the suspension performance expected by electronic safety systems

Product Details

KYB Gas-a-just line struts are engineered for drivers who want original-equipment control with a more responsive feel. The 551122 uses a monotube layout with an air-free hydraulic working area and a separate high-pressure gas chamber, allowing the strut to react quickly during normal driving and deliver added performance when road conditions demand it. For Lexus LS460 owners, this front strut helps restore the designed ride and handling balance on 2007-2017 models without air suspension. This part cross-references Lexus 4851080339 for the same application.

Common Problems This Part Can Address

• Excessive front-end bounce or float
• Reduced steering response
• Uneven or unstable ride quality
• Fluid leakage from a worn strut
• Loss of damping control on heavier wheel and tire setups

Installation Notes and Tips

Fits 2007-2017 Lexus LS460, front, w/o air suspension. Verify the upper and lower mount configuration before installation, and compare compressed length, extended length, and stroke to the removed part. Because this is a suspension strut, a professional alignment is recommended after installation. The KYB 551122 is intended as a direct replacement for the original front strut position on the Lexus LS460.

Quality Assurance

KYB is known for OE suspension engineering, and the Gas-a-just product line is built to replace the factory monotube strut with a design focused on control, response, and consistent damping performance.