This rear diffuser is perfect for car enthusiasts who want to upgrade the look of their 2003 - 2006 Mercedes SL55 R230. When you're driving on the highway or showing off your car at a car meet, this diffuser will make your vehicle stand out. It's made of FRP material, which is light but strong. It's a one - piece design that fits only AMG rear bumpers. Professional installation is a must to ensure it's properly set up on your car.