Do these bolt directly to my truck or require drilling?

These are designed for direct attachment at factory mounting points — no drilling needed. You'll want to verify the exact fastener requirements and torque specs in your truck's service manual before installation.

Do I need to prime or paint these before installing?

That depends on how you want them to look and what climate you're in. If you plan to paint, sand lightly and prime before color coat. Leave them bare if you prefer the raw finish, but expect surface oxidation over time without protection.

Are these a direct fit or will I need trimming?

These are trimmed and ready for installation as-is. Test-fit before final fastening to confirm alignment with your cab, especially if your truck has been modified or has had accident repairs.