Will this diffuser scrape on steep driveways or inclines?

Verify ground clearance on your vehicle before installation. The diffuser extends the rear lower fascia — check your driveway angle and parking ramp heights against your car's current rocker and bumper clearance. If you frequently navigate steep grades, mock-fit the panel first to confirm safe clearance.

Is this purely cosmetic or does it provide functional downforce?

This is an AF-1 style diffuser designed for appearance. Real-world aerodynamic benefit depends on speed, angle of attack, and overall bodywork integration. It delivers the visual aggressive stance without requiring track-specific driving conditions to justify the purchase.

How do I maintain the carbon fiber finish?

Real carbon fiber is durable and low-maintenance. The twill weave is sealed — wash with mild soap and water. If you prefer a glossy finish, apply UV-protective clear coat to enhance appearance and shield the weave from UV exposure. Sand and prep the surface lightly before coating application.