If you're a BMW enthusiast who owns a 1989 - 1995 5 Series E34 4DR and want to enhance your car's look and performance, this Duraflex SR - S Rear Lip Under Spoiler Air Dam is for you. Use it when you're cruising on the highway or showing off your car at car meets. The FRP material gives it a lightweight yet sturdy build, though exact dimensions and weight depend on the part. Just remember, professional installation is a must.