If you own a 2004 - 2007 Subaru Impreza WRX STI and want to upgrade its look and protection, this Duraflex Z - Speed rear bumper cover is for you. Whether you're cruising on the highway or showing off at car meets, it'll make your car stand out. The one - piece design is made from FRP material, which is light but strong. This bumper cover fits 4 - door models of the specified years. Remember, professional installation is needed to ensure a perfect fit.