Will this diffuser scrape on driveway approaches or inclines?

The RBS profile extends moderately below the rear bumper. Check ground clearance on your specific vehicle's approach angle before installation. Most owners adjust their typical driving line slightly to avoid steep driveways. Once mounted, it's a fixed geometry—there's no adjustable ride height component.

Is the downforce functional or mostly cosmetic?

This is a true aerodynamic diffuser, not a visual-only splitter. The undertray channels create measurable downforce at sustained highway speeds (60+ mph). At street speeds and parking lot driving, the benefit is minimal. It's engineered for track use and highway cruising, not low-speed maneuvers.

Can I replace just one side pod if I damage it?

Yes. The three-piece design lets you order and install a single side section without touching the center diffuser or opposite side. This modular approach saves cost and labor if you sustain localized impact damage.