These Duraflex side skirt rocker panels are perfect for car enthusiasts who want to upgrade the look of their 2003 - 2009 Mercedes CLK. Whether you're driving on the street or showing off at a car meet, these panels will make your car look more stylish. They're made of FRP material, which is lightweight yet strong. The panels come in a set of 2 pieces and are designed to fit the W209 model. Professional installation is needed to ensure a perfect fit.