KYB KG9003 Suspension Strut - Rear

KYB Gas-a-Just Strut for Porsche 914

The KYB Gas-a-Just KG9003 is a monotube suspension strut built as an OE-style replacement for the Porsche 914. It uses separate hydraulic and high-pressure gas chambers to deliver responsive damping, stable control, and a consistent ride during normal driving and harder use.

For Porsche 914 owners looking for a direct suspension strut upgrade, the Gas-a-Just line adds damping performance over original equipment while maintaining everyday drivability. The KG9003 is engineered for vehicles that work harder, tow, or run larger wheels and tires, and it is designed to react quickly when steering input or road conditions change.

Gas-a-Just Product Line Details

KYB Gas-a-Just monotube struts use a high-pressure design that separates gas and oil to reduce fade and improve response. The triple chrome plated piston rod helps reduce seal wear, and the monotube layout supports more consistent performance than a traditional twin-tube design. This part number is built specifically for the Porsche 914 application.

Key Features

• Adds up to 25% more damping performance over original equipment shocks
• Monotube construction separates gas and oil for fade-resistant operation
• High gas pressure improves steering response
• Triple chrome plated piston rod helps reduce seal wear
• Designed for Porsche 914 suspension tuning
• Includes B-stop and R-stop features
• Lower mount type: E2(18X50); upper mount type: S1

What This Strut Helps Address

• Excessive body movement over bumps and uneven pavement
• Slow steering response during lane changes or cornering
• Loss of damping consistency from shock fade
• Ride instability with heavier wheels and tires
• Suspension wear symptoms tied to leaking or worn struts

Installation Notes

Verify compressed length, extended length, and stroke length before installation: 14.09 in. compressed, 21.65 in. extended, and 7.56 in. stroke. Confirm mount style and vehicle application for the Porsche 914 before replacement. KYB recommends protecting new struts from dirt, debris, and salt with KYB strut boot SB108.

Quality Assurance

KYB is an OE suspension supplier, and the Gas-a-Just line is built to restore original vehicle capability with a monotube design focused on control and consistency. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.