Will this diffuser scrape on steep driveways or inclines?

The L Sport profile extends below the rear bumper line by design. Check your driveway angle and departure angle before installation. If you frequent steep approaches, test fitment at low speed first to confirm clearance with your suspension setup.

Is this functional downforce or purely cosmetic?

This is a style-focused diffuser. While the profile mimics aerodynamic lines, real downforce requires a complete aero package tuned to your vehicle's weight and power. This diffuser looks aggressive and complements a full body kit — treat it as a styling upgrade rather than a performance modifier.

What finish should I apply — does it need clear coat?

Real carbon fiber benefits from UV-protective clear coat to maintain its appearance and prevent oxidation over time. Sand and prep the surface before applying your chosen finish. Carbon exposed to sun without protection will dull gradually.