TechArt's Rear Spoiler II for 991 Turbo/S Models is a fantastic addition to your 911's aesthetics. It is a precise aerodynamic adaption of the vehicle’s front to the stationary TECHART Rear Spoiler II allows a perfect air flow to the complete vehicle and results in improved driving dynamics and stability throughout all driving conditions. Just like every genuine TECHART product, each part of the TECHART Aerokits has to undergo hard and demanding test procedures during its development process. In terms of aerodynamic components, wind tunnel testing is crucial for both, optimum driving performance and highest active safety. Already at speeds of 140 km/h, the TECHART Front Spoiler I reduces the uplift at the front axle of the 911 Carrera and Carrera S by 5 kilograms. At the same pace, the TECHART Rear Spoiler II generates a remarkable additional downforce of 17.5 kilograms at the 911's rear end. This aerodynamic advantage grown at increasing speeds. At top speed, the TECHART Rear Spoiler II generates 76 kilograms more downforce at the rear axle than the series 911 Carrera S. In other words: the TECHART Aerokit I ensures well-balanced aerodynamics and improves driving stability significantly, especially at high speeds. Must Specify Coupe or Cabrio when ordering.