Do these need clear coat protection?

Yes. Apply a UV-protective clear coat after your base color to preserve the carbon weave and prevent UV yellowing over time. Sand and prep the surface before applying your chosen finish system.

How do I seal the edges where the carbon meets the body?

Mask off the mounting edges carefully before painting. Once your base and clear coats are cured, use a flexible trim sealant or automotive edge tape along any exposed carbon edges to prevent debris ingress and protect the substrate from moisture.

Will these fit my specific setup, or do I need to modify anything?

As over fenders, they're designed as a direct bolt-on solution with minimal fitment work. Before final installation, dry-fit the panels to confirm clearance with your suspension geometry and any lowering modifications you've made. Refer to your vehicle's service manual for correct fastener torque values.