The Bilstein B4 Series 19-220079 is a premium OE replacement gas pressure shock absorber designed to restore your vehicle's original handling and stability. Engineering with Twintube technology, it ensures consistent performance and safety. This product is a single rear strut assembly. Component list: 1x Shock Absorber (Part No: 19-220079). Suitable for vehicles without electronic suspension control (EDC) or M-Technic sport suspension.