The KONI FSD twin-tube gas shock for 2005–2013 Audi A3 rear applications is a low-pressure hydraulic gas shock with Frequency Selective Damping (FSD) technology. Offered as a non-adjustable replacement, it provides factory-style damping tuned for the rear of FWD and Quattro A3 models to restore controlled ride and handling characteristics as a direct replacement shock for the specified years.
Koni FSD Shock 05-13 Audi A3 FWD/Quattro - Rear