Do these mount at the factory mirror points?

Yes—these mirrors attach at factory mounting locations with no drilling or body modification needed. Bolt them up clean.

Will these stay stable at highway speeds with a trailer behind me?

Manual mirrors are solid once mounted. No power motors or pivot joints to loosen. They'll hold position as long as fasteners stay tight. Check your torque specs against your vehicle's service manual before final assembly.

What hardware comes with these mirrors?

The mirror assemblies are included. Fasteners and any brackets required for your specific mounting are not confirmed—verify your vehicle's OEM hardware before installation to avoid delays.