Do these fenders work as standalone pieces or do I need the full wide body kit?

These are designed to be used in conjunction with a complete wide body kit. They're engineered to work as part of that system, so verify fitment with your full kit before purchasing just the fenders.

What prep work should I do before painting these fenders?

Sand the surface with appropriate grit to remove any gloss, then wipe clean. Fill any low spots or minor voids with body filler if needed, sand smooth, and apply your primer and topcoat system of choice. Proper surface prep determines final finish quality.

What hardware comes with these fenders?

The fenders ship as unpainted panels. Verify your wide body kit's hardware specifications — mounting points and fastener requirements should be documented with the complete kit installation guide.