This Duraflex R - 1 Rear Lip Under Spoiler Air Dam is perfect for Audi A4 owners from 2002 - 2005 who want to upgrade their car's appearance. It's great for daily driving, car shows, or just adding a touch of style to your ride. The product is made of FRP material, which is lightweight yet strong. As for the size, it's specifically designed to fit the 2002 - 2005 Audi A4 B6 4DR, though keep in mind the euro - spec design may need adjustments for US models.