Do I need fasteners to install these, or do they come with hardware?

This set includes the panels only. You'll need to source fasteners to secure the over-fenders to your factory fenders. Bolt-on mounting is standard for this design — verify your existing fender bolt locations and use corrosion-resistant fasteners rated for automotive use.

What do I need to do to prep these before painting?

Sand the primer surface with appropriate grit to promote paint adhesion, then wipe clean of dust. FRP panels benefit from a quality sealer or primer before your base coat. Follow your paint system manufacturer's recommendations for surface prep and topcoat compatibility.

Will these fenders fit my wheel and tire setup?

The 20mm extension provides additional clearance over stock fenders. Measure your current wheel offset and tire diameter, then verify fitment by test-fitting the panels before final installation. Aggressive setups may require small adjustments to suspension or wheel positioning to avoid rubbing.