Does this need clear coat protection?

Yes. Applying clear coat protects the carbon weave from UV yellowing and keeps the finish looking fresh long-term. Sand the surface lightly before your chosen finish to ensure adhesion.

How should I seal the edges before installation?

Carbon fiber edges can splinter if left raw. Sand edges smooth, then apply epoxy or a thin seal coat to lock the weave and prevent moisture wicking along the perimeter. This step prevents edge delamination over time.

Will this yellow or fade without protection?

Carbon fiber itself resists yellowing better than fiberglass, but the resin can discolor under direct UV without clear coat. A quality clear coat or protective UV sealant maintains the weave color and gloss indefinitely.