Will this interfere with my trunk seal or bumper alignment?

The Sigma profile is designed to sit flush with the stock bumper line. Before installation, verify your rear bumper is in factory position and undamaged. If your bumper has been previously repaired or adjusted, measure the gap between the bumper and body to confirm clearance matches the diffuser depth.

Should I use adhesive or drill through for mounting?

This diffuser is engineered for mechanical fastening through existing OEM mounting points on the bumper beam. Adhesive alone is not recommended for rear impacts. Drilling is not necessary if your bumper retains factory hardware — use provided or OEM-equivalent fasteners to secure the diffuser.

How does FRP hold up to road debris and heat at highway speed?

FRP is engineered to handle temperature cycling and impact from road debris. UV-resistant properties prevent yellowing under sun exposure. Keep the surface clean and inspect fasteners periodically — vibration from highway driving may loosen hardware over time, so a quick torque check every season maintains stability.