This rear lip under spoiler air dam is perfect for BMW 5 Series E60 4DR owners from 2004 - 2007 who want to enhance their car's appearance. It's great for those who like to stand out on the road. You can use it for daily driving or when you're showing off your car at car meets. As for technical details, it's made of polyurethane and comes in a 1 - piece (S) design.