The Downforce DF-R Side Ducts are offered as a full replacement for the side ducts. The DF-R ducts were loosely derived from the NSX-R GT - a special model of the NSX produced to expand the homologized rules for the Super GT NSX in Japan. The larger opening allows more volume of air to move through the ducts.
Ducts have built in studs, identical to the factory ducts. Attaches to quarter panel with existing factory fasteners - no modifications required.