Will these mount using factory holes, or do I need to drill?

These bolt directly to factory mounting points—no drilling needed. Use a socket and wrench to secure them at the OEM hardpoints.

Do these rails come with mounting bolts?

Hardware for mounting is not included with the rails. You'll need to source bolts and fasteners that match your truck's factory mounting spec—a hardware store or fastener supplier can match them once you confirm the hole size and thread pitch at your truck's hardpoints.

Can I paint these if I want a different color?

The black powder coat is durable as-is, but if you want a custom color, light scuff the finish with fine sandpaper, apply automotive primer, and finish with your chosen paint. Test fit before sanding to confirm final placement.