Do these use factory bolt holes or will I need to drill?

These mount at factory rocker and wheelwell points—no drilling. You'll just need basic hand tools and hardware to secure them in place.

What prep work do I need before painting?

The flares come primer-ready. Light sanding and a wipe-down is all you need before base coat and clear. No special surface treatment required.

Are fasteners included in the box?

The flares only—fasteners and mounting hardware are not included. Grab stainless steel bolts and washers rated for your truck's weight and you're set.