Do these need clear coat protection?

Yes. Carbon fiber exposed to direct sunlight will yellow over time without UV protection. Apply quality automotive clear coat after final fitting and sanding to preserve the weave finish and maintain color integrity long-term.

How do I seal the edges where the fenders meet the door?

Sand the edge surfaces smooth, then apply flexible automotive sealant or trim seal along the gap before final installation. This keeps moisture out and prevents debris buildup. Test fit first to confirm clearance and gap consistency before sealing.

Will these fit if I have aftermarket side skirts or splitters already installed?

Over-fenders mount independently to the wheel well area, so existing skirts and splitters typically do not interfere. Mock up your setup by positioning the fenders and checking clearance with other installed components before final installation.