Do these bolt to the factory rocker points?

Yes. These mount at the existing factory attachment locations—no drilling or fabrication needed. Use grade fasteners appropriate for your vehicle's rocker panel material.

Can I install these on a lifted or lowered car?

If your suspension is lowered significantly, the skirt clearance to the ground will be tighter. Test-fit before final installation to confirm adequate ground clearance at full compression.

Does the matte finish need to be sealed or painted?

The matte coat ships ready to install as-is. If you want a gloss finish or added UV protection, you can wet-sand and clear-coat, but it's not required for durability.