Will this diffuser scrape on steep driveways or inclines?

The Rover design extends lower than OEM, so driveway approach angles matter. Measure your vehicle's current ground clearance at the bumper before ordering. If you regularly bottom out on ramps, plan your approach or consider suspension adjustments.

Is the diffuser purely cosmetic or does it add functional downforce?

The integrated fin design functions as both. It improves rear-end stability at highway speeds through air acceleration, while the aggressive look delivers the visual impact you're after.

Should I apply clear coat protection to the carbon?

Yes. Clear coat protects the finish from UV fade and weathering while preserving the weave texture. Sand the surface lightly before application for best adhesion.