Do I need to sand the primer before painting?

Yes. The Raw FRP finish requires light sanding to ensure proper paint adhesion. Sand the surface with appropriate grit and wipe clean before applying your chosen basecoat and clear.

Will I need new fasteners to install these?

Reference your vehicle's OEM mounting points and consult your service manual for fastener specifications. The extensions mount directly to existing rear body anchor points.

Can these extensions be repaired if cracked?

FRP can be repaired using standard fiberglass repair techniques if minor damage occurs. For structural concerns, assess the damage carefully — minor cracks in non-critical areas can be sealed and recoated; deeper damage may require panel replacement.