Use these fenders when you want to upgrade the look of your 2006 - 2008 Audi A4 S4 B7 4DR. They are perfect for car enthusiasts who love to customize their vehicles and make them stand out. The fenders are made of FRP material, which gives them a good balance of strength and lightness. They are designed in the RS4 style, fitting well with the overall aesthetic of the Audi. Just make sure to use them with a complete wide body kit and get a professional to install them.