The Koni 1145 Sport Kit 09-13 Audi A4 2.0 Sedan FWD & Quattro is a performance suspension upgrade designed to improve the ride and handling of the Audi A4 2.0 Sedan FWD & Quattro. This kit includes Koni Sport Shocks and Struts, Koni Sport Springs, and Koni Sport Sway Bars. The shocks and struts are designed to provide improved damping characteristics and improved handling, while the lower springs offer a lowered center of gravity and improved cornering ability. The sway bars are designed to reduce body roll and improve cornering stability. This kit is a great way to upgrade the performance of your Audi A4 and get the most out of your driving experience.