KYB KG5543 Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Porsche 911

The KYB Gas-a-just KG5543 is a rear suspension shock absorber built as an OE-style monotube replacement for select Porsche 911 applications. It is engineered to restore original handling response while adding firmer damping control for street driving, towing loads, and vehicles with larger wheels and tires.

Key Features

• Monotube design separates gas and oil for consistent response and fade-resistant operation
• Up to 25% more damping performance than original equipment shocks
• Higher gas pressure improves steering response and suspension control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Dust cover included for added protection
• Designed specifically for Porsche 911, 912, and 930 applications
• Part number KG5543 for rear suspension service

Product Details

KYB Gas-a-Just shocks use two working chambers: an air-free hydraulic section for precise control and a high-pressure nitrogen chamber with a floating piston for quick reaction and a more controlled ride. This design supports stable damping under normal driving and adds immediate performance when suspension demand increases. For Porsche 911 rear suspension service, KG5543 provides an OE monotube replacement that matches the vehicle’s original layout and helps maintain the handling balance expected from the chassis. This part cross-references Gabriel 82619 for the same application.

What It Helps Address

• Excessive rear suspension bounce or oscillation
• Reduced steering response from worn shock absorbers
• Fade in damping performance during repeated suspension movement
• Seal wear and fluid leakage from aging shock rods
• Loss of control on Porsche 911 rear suspension setups with heavier tires and wheels

Installation Notes and Fitment

Fits 1969-1971 Porsche 911, rear. Fits 1965-1968 Porsche 911, rear. For 1965-1968 Porsche 911 rear applications, replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify compressed length 15.98 in., extended length 21.97 in., stroke length 5.98 in., upper mount type S1, and lower mount type E2(12X32) before installation.

Quality Assurance

KYB designs Gas-a-Just shocks as OE monotube replacements to restore factory-style suspension performance with controlled damping and responsive handling. The KG5543 is built for direct rear shock service on select Porsche 911 models.