Will this diffuser scrape on driveway aprons or steep inclines?

The Super Fin profile is designed to follow the factory rear bumper line and body curves. Check your current ride height and compare to your typical approach angles before final installation — if your vehicle sits lower than stock, verify clearance over speed bumps and driveways during test fitting.

Is this diffuser functional downforce or purely cosmetic?

The multi-element fin design creates real aerodynamic flow separation at highway speeds, working as a functional aerodynamic device. Visual benefit and actual airflow management work together — you get both.

What prep work is required before painting?

Sand and prep the surface with standard body shop procedure before applying your chosen finish. The FRP panel arrives ready for basecoat and clearcoat application once surface prep is complete.