Will this interfere with my factory bumper or undertray at speed?

The lip is engineered to sit flush within OEM fascia tolerances. Before final fitment, verify clearance with your undertray and confirm all mounting points align with factory hole locations — any gaps should be sealed with proper weatherstripping to prevent wind noise or debris intrusion at highway speeds.

Should I use adhesive or drill through the factory bumper to install this?

FRP lips typically mount via factory fastener points that already exist in the bumper cover. Verify your vehicle's OEM attachment method before assembly — some use clips, others use adhesive backing. Drilling new holes is not recommended; use existing mounting locations to preserve structural integrity.

How do I prep and paint the FRP before installation?

Sand the surface with appropriate grit and wipe clean before applying your primer and topcoat. FRP accepts standard automotive paint finishes — follow your paint manufacturer's surface prep recommendations for best adhesion and durability. Allow full cure before mounting to the vehicle.