Will this diffuser scrape on steep driveways or inclines?

The three-piece design mounts to the existing bumper structure without adding extreme lower extension. Before final installation, test-fit the sections and verify clearance over your driveway geometry and any aggressive approach angles you regularly encounter.

Is this diffuser functional or mainly cosmetic?

This AG Design diffuser enhances the visual aggression of the rear end and helps organize airflow under the bumper. It functions as a styling element first; for measurable aerodynamic performance, your overall body kit setup and speed range will determine real-world effect.

What prep work is required before painting?

Sand and prep the surface with your chosen abrasive before applying your base coat and clear. Proper surface prep ensures paint adhesion and finish longevity — follow your paint manufacturer's guidelines for grit and technique.