Will this interfere with the trunk seal or latch mechanism?

The Motox profile is designed to sit cleanly under the existing bumper line without raising trunk height. Before final fitment, verify rear bumper-to-body gaps match the two-piece geometry — some older vehicles with modified suspension may require minor alignment adjustment.

Can I use adhesive, or do I need to drill through the bumper?

This diffuser set is best secured using both adhesive and fasteners for long-term stability at highway speeds. A two-piece design benefits from mechanical retention along the seams. Your installer can decide the mix based on bumper material and local conditions.

Will this stay stable at high speed?

Carbon fiber panels are rigid and lightweight, which minimizes flex. Proper fitment and secure mounting — whether adhesive, fastener, or hybrid — are critical to prevent vibration. Inspect mounting points before highway driving and re-torque any fasteners after the first 50 miles to confirm zero movement.