Do I need to install hardware or fasteners myself?

These panels are designed for bolt-on mounting to your existing fender structure. Verify your factory mounting points are clear and undamaged before installation. You'll want to confirm what fastener type and size work with your current setup.

What should I do to prepare these before painting?

Sand the surface to promote paint adhesion. Use appropriate grit progression to create a smooth, even base. Once prepped, apply your chosen primer and paint system according to the product manufacturer's instructions.

Will these fit with my current fender-mounted accessories?

Since these mount as over-fenders, you'll want to check clearance with any fender-mounted trim, molding, or accessories you currently have. Measure the extension profile against your setup before installation to avoid fitment conflicts.