Bilstein B4 OE Replacement (DampTronic) front twin-tube strut for 2006–2013 Porsche 911 Carrera 4S is a direct OE-style replacement for electronically adjustable dampers. The B4 DampTronic unit is intended to restore original ride quality and handling while meeting OE standards, supplied as a twintube strut assembly engineered to meet high OE quality and safety expectations.
Bilstein 06-13 Porsche 911 Carrera 4S B4 OE Replacement (DampTronic) Twintube Strut - Front Left