Do these need clear coat protection?

Yes. Carbon fiber benefits from UV-protective clear coat to maintain finish and prevent oxidation over time. Sand the panels lightly before applying your chosen clear coat system for best adhesion and longevity.

How do I seal the edges where the panels meet the body?

After fitting the fenders, sand and prep the edges, then apply a flexible edge sealant or matching clear coat along the seams. This prevents moisture intrusion and keeps the weave protected where panels overlap or meet the existing body line.

Will the carbon fiber yellow without protection?

Bare carbon fiber can develop a yellowed or hazy appearance when exposed to UV light without clear coat. Applying a quality UV-protective clear coat immediately after installation will preserve the original finish and weave pattern.