2017-2021 Honda Civic Rear Diffuser (Hatch [Non Sport] )

2017-2021 HONDA CIVIC NON HATCH SPORT - Fitment: 2017-2021 Honda Civic Hatch (non-sport)   - 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 is included - Professional install highly recommended     A rear diffuser is an automotive aerodynamic modification typically found mounted on the vehicle’s underbody located at the rear of the vehicle, 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, meaning the air flow is accelerated at the beginning of the diffuser creating