Will this diffuser scrape on inclines or speed bumps?

The GTR-style profile extends below the rear bumper line. Before installation, verify ground clearance at your vehicle's lowest points — driveway angles, parking lot approaches, and steep inclines. Test fit or reference forum posts from owners with similar suspension setups to confirm your ride height will provide adequate clearance.

Is this diffuser functional or purely cosmetic?

The GTR design combines visual aggression with functional diffuser geometry. It will generate some downforce benefit at highway speeds, though results depend heavily on vehicle speed, suspension tuning, and overall aerodynamic package. Cosmetic impact is immediate; aero gains are subtle and best paired with a complete rear-end aero setup for measurable effect.

Will exhaust tips clear this diffuser, or will I need to modify my exhaust?

Exhaust tip positioning and diffuser profile interact tightly. Confirm your current tip diameter and exit location against the diffuser geometry before purchasing. You may need to adjust, relocate, or upgrade your exhaust tips to maintain clearance — no modification to the diffuser itself is typically required, but custom exhaust work is common with aggressive rear-end kits.