Front Bumper Canards (Carbon Fiber) For 2016 Porsche Cayman GT4/Boxster Spyder (981)Porsche Cayman GT4 Boxster Spyder 981 Carbon Fiber Front Bumper Canard (2016) . Auto styling canards crafted from durable polyurethane are designed specifically for your vehicle enhance aerodynamic performance. By generating additional downforce, these canards improve vehicle stability and handling, especially at higher speeds. They help maintain airflow attachment along the sides of the car, reducing lift and increasing cornering precision.