Do these mount at the factory rocker points, or do I need to drill?

These mount at factory rocker panel points—no drilling or holes required. You'll use existing attachment locations on your truck.

What hardware do I need to install these?

The listing doesn't specify fastener type or size. Before installation, test-fit the bars to your truck and identify what bolts or brackets you'll need, then source accordingly. Your truck's service manual can confirm the rocker panel attachment specs.

Can I repaint or refinish the black bars if I want a different color later?

Black bars can be sanded and refinished like any hard panel surface. Clean, sand, prime, and paint using standard automotive processes. Chrome bars are harder to refinish at home—professional re-chroming is the better route if you want to change the finish.