The F90 M5 -3DS style Carbon Fiber Rear Bumper Lip Diffuser Spoiler is an aftermarket modification for a BMW F90 M5 car. It is a carbon fiber component designed to attach to the rear bumper of the car and improve its aerodynamic performance while also enhancing its appearance. The "3DS style" refers to the design of the diffuser, which features multiple fins that create a three-dimensional effect. The F90 M5 -3DS style Carbon Fiber Rear Bumper Lip Diffuser Spoiler for BMW F90 M5 has several potential advantages: 1. Improved aerodynamics: The diffuser design can help redirect airflow to reduce drag and increase downforce, improving stability and handling at high speeds. 2. Enhanced appearance: The carbon fiber construction and unique 3DS style can add a sporty and aggressive look to the car's rear end. 3. Lightweight construction: Carbon fiber is a strong and lightweight material, which can help reduce the car's overall weight and potentially improve performance and fuel efficiency.