Do I need to remove my factory fenders to install these?

No. Over fenders bolt directly over your existing factory fender structure. You keep the OEM panel in place and layer the new piece on top, which means zero cutting and zero permanent modifications to your vehicle.

What preparation is required before painting?

Sand the surface with appropriate grit to scuff the gelcoat, then clean thoroughly to remove all dust and debris. Apply your chosen primer and topcoat system following the paint manufacturer's instructions. Proper surface prep ensures maximum adhesion and a clean final finish.

Are fasteners included, or do I need to source my own hardware?

Fasteners are not included with this set. Measure your factory fender bolt pattern and hole spacing, then source bolts, washers, and spacers that match your OEM configuration. A quick comparison with a stock fender will confirm the specs you need.