Sway bars, also known as anti-roll bars do exactly as the name states. They help decrease body roll. They do this by connecting one side of your vehicle to the other. By decreasing your 2013 Audi A4 Quattro body roll, you can hit those corners harder. Performance sway bars increase the suspensions stiffness, and increase handling. Sport Compact Warehouse is your premier source for sway bars. Reach out to one of our representatives today with any questions you may have and we can help you make a more informative decision.