Will I need to remove the bumper cover to install this?

Yes. The reinforcement bar sits behind the bumper cover, so you'll need to remove the cover first to access the mounting points. It's bolted directly to the frame at factory holes.

Does this come with all the bolts and brackets I need?

The bar itself comes as a single component. Fasteners and any bracket hardware should be sourced separately or reused from your old reinforcement bar — refer to your service manual for the exact hardware spec.

Can I paint this before installing it?

You can, but most people install it first and touch up any exposed areas after. Since it sits behind the cover, finish quality matters less than protection against rust — a basic primer or epoxy coat works fine if you want to prep it beforehand.