The wide front and rear track, along with the recessed contours along the doors, enhance the visual power of the Stinger?s shoulder line as well as its fastback silhouette. Other purely functional elements of the exterior design ? the front air curtains, wheel arch gills, smooth underbody, and integrated rear diffuser ? aid its aerodynamic efficiency. The rear valance houses four oval exhaust pipes. Kia?s signature ?tiger-nose? grille sits proudly between complex LED headlamps.