Will this diffuser scrape on steep driveways or inclines?

Rear diffusers add minimal extension to the lower bumper profile. Before installation, verify ground clearance by checking your vehicle's approach angle at common problem spots — steep driveways, parking lot ramps, speed bumps — to ensure the geometry works for your typical driving environment.

Is this purely cosmetic or does it provide functional downforce?

This diffuser is styled after a functional design but delivers aesthetic benefits as the primary goal. Real downforce requires vehicle-specific aerodynamic tuning and integration with the full body kit. Use this piece to complete the Emery look while understanding that cosmetic diffusers contribute visual presence rather than measurable performance gains.

What prep work is needed before painting?

Sand the surface with your chosen grit before applying basecoat and clearcoat. Follow your paint supplier's recommendations for surface prep on FRP panels — most shops use standard automotive protocols. After paint cure, verify panel fitment and any mounting gaps before final installation.