Do I need to sand and prep this before painting?

Yes. Sand the surface with appropriate grit to scuff the finish, then clean thoroughly before applying your basecoat. This ensures proper adhesion and a clean final finish.

What adhesive or fasteners should I use to bond this to my bumper?

Integration method depends on your bumper design and your preferred installation approach. Common methods include structural adhesive, self-tapping fasteners, or a combination. Reference your OEM bumper structure and consult a professional installer if you're unsure about mounting points.

Can this be repaired if it cracks during installation or use?

FRP can be repaired with fiberglass repair kits if damage occurs. For significant cracks or structural concerns, a professional body shop experienced with composite repair can restore the piece. Minor surface damage sands out easily before repainting.