Will the diffusers interfere with the trunk seal or weatherstripping?

The Maver design sits low on the bumper line and does not extend into the trunk seal area. Before final installation, fit the pieces dry and check clearance at the vertical edges where the bumper meets the body. Sand or trim if needed for a flush fit with your specific bumper.

Can I glue these on, or do I need to drill through the bumper?

Both methods work depending on your preference. Adhesive mounting keeps the bumper intact but requires strong surface prep and patience for cure time. Drill-through fastening offers permanent security and is easier to remove later if needed. Either way, sand the mounting surface thoroughly and allow proper cure or set time before driving.

Will these stay stable at highway speed?

FRP diffusers are rigid and designed to handle road vibration when properly mounted. Secure fastening and full contact between the piece and bumper surface are critical — do not rely on partial adhesive contact or loose hardware. Ensure all mounting points are solid before highway use.