The 1 PAIR Replacement F90 M5 Carbon Fiber Fender Trim Vent for BMW F90 M5 is an aftermarket car part designed to fit on BMW F90 M5 models. The fender trim vent is made from carbon fiber, a lightweight and strong material that is often used in high-performance automotive applications. The replacement fender trim vent is intended to replace the OEM (original equipment manufacturer) fender trim vent on the BMW F90 M5, and is designed to provide a more aggressive and sporty look to the vehicle. The fender trim vent serves a functional purpose as well, as it helps to improve the car's aerodynamics by directing airflow over the wheels and reducing drag. This can help to improve the car's stability and handling at high speeds, making it more suitable for track use.