Will this lip interfere with my bumper if I have OEM parking sensors?

FRP lips mount below the bumper fascia and do not typically obstruct sensor operation. Before installation, verify your vehicle's sensor locations relative to the mounting point to confirm clearance on your specific setup.

Should I use adhesive or fasteners to secure this to the bumper?

Most installations combine both — adhesive along the top edge for a clean look and fasteners (bolts or brackets) through factory or drilled mounting points for stability. Your choice depends on whether you want permanent mounting or future removal capability. Check your vehicle's lower fascia structure to confirm existing anchor points.

Will this lip stay stable at highway speeds?

Yes, provided it's mounted with fasteners in addition to adhesive and the surface is clean and properly prepped before assembly. Adhesive alone is not reliable for highway use — dual-mounting (adhesive + mechanical fasteners) is the standard for longevity and safety.