Will this diffuser scrape on steep driveways or parking lot inclines?

The SBZ diffuser is designed to sit at the OEM bumper line—verify ground clearance on your specific vehicle by checking the rear bumper height when parked on an incline. If you run lowered suspension, test approach angles before committing to installation.

Is this functional downforce or purely cosmetic styling?

This is styled for visual aggression at the rear end. Real-world aerodynamic benefit depends on vehicle speed and setup; it adds presence and refines the rear profile most noticeably at highway speeds.

What finish should I apply, and will it come pre-sealed?

The diffuser arrives unfinished carbon fiber. Sand and prep the surface, then apply your chosen clear coat or UV-protective finish to preserve the weave and prevent oxidation over time.