Will these caps work with a tonneau cover or bed cover?

These rail caps sit on top of the bed rails and won't interfere with most tonneau covers. If your cover clamps down tight to the rails, test-fit before final installation to ensure clearance.

Do I need to remove the factory bed step to install these?

Installation method isn't detailed in the product specs, so verify your truck's factory step configuration before ordering. Contact support with your specific cab/bed setup if you're uncertain about step clearance.

Can I paint these to match a custom color?

Yes. The black finish is paintable if you want to match a custom bed color. Light sanding and standard automotive primer and paint will adhere well to the hard panel surface.