Will this diffuser scrape on driveways or steep inclines?

The GM-X diffuser is mounted at the rear bumper line, so ground clearance depends on your vehicle's existing ride height and bumper geometry. Verify the mounting location against your current rear bumper profile before installation to confirm adequate clearance at typical approach angles.

Does this diffuser provide functional downforce or is it cosmetic?

This is a styling component designed to enhance the visual appearance of the rear bumper. Real aerodynamic benefits require a complete aero package engineered as a system—this diffuser complements that look but should not be considered a standalone performance upgrade.

What prep work should I do before installation?

Clean and dry the mounting surface on your existing rear bumper before fitting. If you plan to apply a protective clear coat or customize the finish, sand and prep the carbon surface according to your chosen coating manufacturer's specifications for best adhesion and longevity.