The Bilstein B6 DampTronic shock absorber is the ideal performance upgrade for vehicles equipped with factory electronic suspension systems. Designed specifically for the BMW 3 and 4 Series, this rear twintube shock integrates seamlessly with the original Plug-and-Play BMW EDC (Electronic Damper Control) system. It offers improved handling, increased stability, and enhanced comfort compared to standard components, all while maintaining full functionality of the dashboard damping controls. Sold as a single unit (1x Rear Shock Absorber, Art: 20-250744). Perfect for drivers seeking a sporty feel without sacrificing the benefits of active suspension technology.