APR Porsche Cayman GT4 Carbon Fiber Gurney Flap
APR PERFORMANCE CARBON FIBER PORSCHE GT4 GURNEY FLAP
The APR GT4 Gurney flap is super-lightweight, made in carbon fiber using a pre-impregnated dry carbon process to conform perfectly to the contours of your stock Cayman GT4 rear airfoil. The Gurney flap increases downforce by increasing pressure on the pressure side (side facing the airfoil), decreasing pressure on the suction side (facing the rear of the car), and helping the boundary layer air flow stay attached all the way to the trailing edge of the airfoil. It is easily attached using the included double-sided tape.