Will this diffuser scrape on steep driveways or entry ramps?

Rear diffusers sit lower than the main bumper. Confirm ground clearance against your current ride height and driveway approach angles before installation. If you run lowered suspension, test fitment in your parking area first — a test pass will tell you everything you need to know.

Does the R500 style diffuser provide functional downforce or is it cosmetic?

The R500 profile is styled to evoke performance aesthetics. Real aerodynamic benefit depends on vehicle speed, suspension setup, and overall body modifications. This kit delivers the look; don't count on measurable downforce at street speeds.

What prep work does the FRP require before painting?

Sand the surface with appropriate grit to scuff the gelcoat, then wipe clean. Your choice of primer and topcoat will determine final durability and appearance. Refer to your paint supplier's prep guidelines for their specific system.