Dive Plane Kit - Fiesta STOur Dive Planes for the Fiesta ST were specifically designed to add a slight bump in front end downforce while being drag neutral and is safe to be used with or without our Fiesta ST rear diffuser. Dive planes also referred to as canards, allow you to shift the aero balance forward, aiding you and your setup in balancing out a large rear wing or diffuser. Dive planes also help seal the sides of the car and help evacuate air from the wheel well,