If you're a Ford Mustang enthusiast from 2005 - 2009 looking to enhance your car's appearance and performance, this Duraflex rear lip under spoiler air dam is for you. Use it when you're on the road or at car shows to make your Mustang stand out. It's made of FRP material, which is both lightweight and strong, and comes in a single - piece design that's easy to identify by its part number 100649.