Will this diffuser scrape on steep driveways or inclines?

A rear diffuser sits lower than the bumper, so steep approaches and speed bumps are worth planning around. Check your typical routes and driveway angles before installation to confirm clearance fits your driving style.

Is this diffuser functional downforce or cosmetic?

This is a styling piece designed to replicate the factory ZL1 look. Aerodynamic benefit at street speeds is minimal—the main appeal is the aggressive rear-end appearance and visual performance cue.

What prep work does the FRP surface need before painting?

Sand the surface with medium-grit sandpaper to roughen the texture, then wipe clean and apply your chosen primer and paint system. Follow your paint manufacturer's instructions for adhesion and cure times—FRP accepts standard automotive finishes well.