The Bilstein B6 Performance series is designed for drivers who want improved handling and stability without changing the vehicle's ride height. This 36mm Monotube Strut Insert (Part No. 34-001127) is specifically engineered for Porsche 911 models equipped with original factory struts. Key features include: gas-pressure technology for consistent damping, high-pressure monotube design for superior heat dissipation, and a direct bolt-on fitment. Ideal for both street and spirited driving. Note: This is an individual strut insert. Components included: 1x Shock absorber insert, 1x Mounting gland nut, 1x Dust cover boot.