All exterior products require professional installation. Some minor adjustments may be needed for installation. Please ensure to test fit your product before installing, Any product that shows/has been installed, modified or damaged will be denied an exchange or refund. All Carbon Fiber or exterior products are hand crafted and no two items will be exactly the same. Small imperfections such as minor waves in the carbon weaves, tiny air bubbles, and clear coat imperfections are inevitable. Over time, any Carbon Fiber product(regardless of manufacturer) may have it's clear coat fade/change color based on exposure to the sun or weather elements and how you maintain your product; these are not a manufacturing defect.