Will this diffuser scrape on steep driveways or inclines?

Street Rio styling maintains a conservative rake angle designed to clear standard driveway approaches. Verify ground clearance by measuring your current bumper-to-ground distance at the lowest point — the diffuser's profile will not extend significantly beyond OEM geometry.

How do I prep the FRP surface before painting?

Sand and prep the surface with standard body-work grit progression before applying primer and topcoat. The Raw FRP finish gives you a stable base — no additional sanding sealer required before your first primer coat.

Does this diffuser provide functional downforce or is it cosmetic?

This is a style-focused design — Street Rio aesthetics without aerodynamic engineering. If rear downforce is your priority, pair this with a dedicated wing or splitter system. The diffuser enhances visual balance and integrates naturally with the rear fascia.