AeroflowDynamics 2015-2021 Subaru Wrx/Sti Rear Diffuser V6

WRX Rear Diffuser, STI Rear DiffuserModel:  2015-2021 SUBARU WRX/STI REAR DIFFUSER  V6Fitment: 2015-2021 SUBARU WRX/STI Type: Subaru WRX body kit, STI Body Kit Made from Aerospace Lightweight ALUMINUM no ABS PLASTIC!!!! Made in the USA Comes fully CNC'd and professionally powder coated. Comes pre-drilled Fitment Guaranteed Hardware included Professional install highly recommended Installation Video here   A rear diffuser is an automotive aerodynamic modification typically found mounted on the vehicle’s underbody located at the rear of the car, underneath the rear bumper. As a vehicle is in motion, air flowing in the underbody is typically at high-speed and has low-pressure. The design and purpose of a diffuser are to help reduce drag and to create downforce by facilitating the airflow underneath the vehicle’s underbody. A diffuser is used to increase the air volume along its full length, thus creating a void that must be filled by air. This in turn creates a Venturi effect, meani