Will the carbon fiber pattern fade or yellow over time?

The finish is UV-resistant, but long-term exposure in desert or high-altitude climates can dull any pattern over years. Parking in shade extends the finish life significantly.

Do these come with adhesive, or do I need to buy it separately?

Adhesive is not included. Use a flexible automotive bonding adhesive (polyurethane or silicone-based) rated for exterior trim. Test-fit first to confirm placement before applying any adhesive.

Can I seal the edges after installation to prevent water from getting behind them?

Yes. Once adhesive has fully cured (follow adhesive instructions), a flexible sealant along the edges where the visor meets the window frame will keep water out and lock the bond.