KYB KG5542 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Porsche 911

The KYB Gas-a-just KG5542 is a monotube rear shock absorber built as an OE-style replacement for Porsche 911 and 912 applications. It uses separate hydraulic and high-pressure gas chambers to deliver responsive damping, stable control, and consistent ride quality in normal driving and under heavier load conditions.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube design separates gas and oil for fade-resistant operation and quick response
• Higher gas pressure improves steering response and suspension control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Built with components and valving specific to Porsche 911 and 912 rear suspension needs
• Includes dust cover, B-stop, and R-stop

Product Details

Part number KG5542 is part of KYB’s Gas-a-just line, a monotube shock absorber series designed to restore original suspension capability while adding firmer damping when the vehicle is driven hard, carries heavier wheels and tires, or sees towing and load demands. For Porsche 911 rear shock replacement, this design supports consistent control by keeping the gas and oil separated, which helps maintain response during repeated suspension movement. This part cross-references Gabriel 69614 for the same application.

What It Helps Address

• Excessive rear-end bounce or oscillation
• Reduced steering response from worn rear shocks
• Fluid leakage caused by seal wear
• Fade in damping performance during repeated suspension use
• Loss of control after suspension wear on Porsche 911 rear applications

Installation Notes

• Fits 1988 Porsche 911, rear, recommended OEM replacement; to 7/88; Gas-a-just
• Fits 1972-1987 Porsche 911, rear; replace suspension strut and coil spring assembly according to manufacturer instructions; Gas-a-just
• Verify compressed length, extended length, stroke length, and mount types before installation
• Rear shock replacement on Porsche 911 and Porsche 912 applications should follow factory service procedures

Quality Assurance

KYB designs the Gas-a-just KG5542 as an OE monotube replacement with application-specific valving for Porsche 911 rear suspension use. The monotube construction and chrome piston rod are engineered to support consistent damping performance and reduced seal wear over time.