This Duraflex GT - S roof wing spoiler is perfect for car enthusiasts who want to upgrade the look of their 1997 - 2003 BMW 5 Series E39 4DR. Whether you're cruising on the highway or showing off at car meets, this spoiler will make your car stand out. It's made of FRP material which is both lightweight and strong. As for technical details, while specific size and weight aren't provided, it's designed to fit seamlessly on the roof of your 4 - door BMW for a sleek and sporty look.