Carbon Fiber Rear Trunk Spoiler Wing fits 2014-2020 BMW F33 4-Series ConvertibleThis Brand New, specially designed carbon fiber trunk spoiler creates a more aggressive, sporty look for your vehicle, and modifies airflow over the vehicle, creating additional down force to keep your tires more solidly on the road. This means greater performance and handling for you, the driver! And don't forget, they look way cool! Designed specifically for your 4 Series F33 Convertible, these spoilers are made using a cutting edge manufacturing