Will this diffuser scrape on steep driveways or inclines?

The Velocity profile extends from the rear bumper line downward. Verify ground clearance on your specific suspension setup before install — lowered vehicles or aggressive ride height may require adjustment. Measure your current rear bumper clearance and account for the diffuser's extension.

Does this produce actual downforce or is it cosmetic?

The angled fin geometry is designed to work with rear airflow and promote pressure stabilization. Real-world performance gains depend on speed, ride height, and suspension geometry. It delivers visual aggression first; aerodynamic benefit scales with how you drive and how low you sit.

What finish should I apply to protect the carbon fiber?

A UV-protective clear coat is the best long-term defense against fading and weathering. Sand and prep the surface before applying your chosen finish. Raw carbon fiber will oxidize over time without protection, so plan your finish upfront — whether that's matte clear, gloss, or natural weave display under a protective layer.