Do I need fasteners to mount these fenders?

Installation will require fasteners to secure the panels to your vehicle. Check your OEM fender mounting points to determine the quantity and type needed for your specific setup, then source hardware accordingly.

What preparation is needed before painting?

Sand the FRP surface to remove the glossy gelcoat finish and promote paint adhesion. After sanding, clean thoroughly and apply your chosen primer and topcoat for a finished look that matches your vehicle's paint scheme.

Will these fenders clear my factory wheel setup?

The 25mm extension adds width to the fender line. Verify clearance between the outer edge of these panels and your wheel/tire diameter before final installation, especially if you run larger diameter or offset wheels.