Do these side skirts change ground clearance?

No. These skirts follow the factory rocker line and don't extend below it, so there's no loss of ground clearance or approach angle. They mount flush with the existing body panel mounting points.

Should I sand and prime these before painting, or are they ready to paint?

Sand the primed surface lightly with fine-grit paper to key the finish, then apply your chosen basecoat and clear coat directly. The factory primer provides good adhesion prep—no additional primer coat is needed.

Will these hold up to road debris and minor impacts?

FRP is more impact-resistant than standard plastic and won't shatter under flex or minor road strikes. The material is designed to absorb contact better than painted ABS bumper covers, making these practical for daily driving.