Do I need to prime and paint this before installation?

Yes. The diffuser Requires Surface Prep, which means the surface has been prepared to accept primer and paint. Sand lightly to ensure proper adhesion, then apply your chosen primer and topcoat. This approach gives you full control over color matching and finish quality.

What fasteners do I need to bolt this on?

The diffuser is a structural panel and requires fasteners to secure it to the existing rear bumper structure. Confirm your vehicle's OEM mounting hole locations and fastener specifications before ordering hardware — this ensures a secure fit without drilling into the panel unnecessarily.

Will FRP crack or break if I scrape the rear bumper?

FRP is impact-resistant and more forgiving than brittle plastic, but like any aftermarket panel, it benefits from careful installation and clearance awareness. Once installed and painted, treat it like any body panel — mind your approach angles and reversing distance to avoid damage.