This is the aggressive "fin like" part that mounts on the rear of the roof right above the window. The vortex generator provides a great look and actually improves downforce at high speeds.
According to the Ralliart EVO MR brochure, this vortex generator was wind tunnel tested at 180km/h. Vortex Generator Test results (on 180km/h): Rear downforce: + 2kg = 35% UP Air Resistance (CD) : 1.1% OFF
Developed to increase rear downforce by optimizing air flow over the carbon-fiber airfoil.
Eisen Gray Only