Do I need to prep these before installation?

Yes. Sand the contact surfaces and any mounting points where the skirts meet your rocker panels. This ensures clean adhesive contact if you're bonding them down, or proper fitment if you're using mechanical fasteners. The bottom edge and any raw FRP edges benefit from light sanding to remove mold seams before final assembly.

What finish should I apply?

Sand and prep the surface before applying your chosen primer and paint. FRP accepts standard automotive urethane and polyester finishes. A clear coat over your paint will protect the finish from UV and road debris — especially important since these skirts sit low and catch salt spray and stone chips on the highway.

Will these fit with my current wheels and suspension setup?

Check your vehicle's current ride height and wheel fitment against the aggressive stance profile of these skirts. Lower suspension may require minor trimming of the rocker area or adjusting your approach angle. Verify clearance between the skirt edge and your wheels before final installation — wider wheels or aggressive offsets may need mock-up testing.