This Duraflex rear diffuser is perfect for BMW enthusiasts who want to add a sporty touch to their 2014 - 2020 BMW 4 Series. Whether you're cruising on the highway or showing off at car meets, it will make your car stand out. The diffuser is made of FRP material, which is both lightweight and strong. While specific size and weight details aren't given, you can expect it to fit well on your BMW 4 Series F32 as it's custom - designed for this model. Professional installation is a must to ensure it looks and functions at its best.