After Techart gave us a peak at their new Aerokit I , another German tuner unveiled its tuning program for the Porsche 911(997): Vorsteiner. The tuner specialized in German cars such as Mercedes, Bmw and Porsche decided that the 911 series need some improvement and as far as we see it, they made quite a good job.Their new kit consists in a front bumper featuring carbon-fiber air inlets and opening for the center radiation vent, a new carbon-fiber front lip spoiler, carbon-fiber mirror covers, new carbon-fiber door sills, a new rear diffuser designed to improve the downforce at the rear of the vehicle, a carbon-fiber rear wing in order to maximize the performance of the 911 and a rear bumper replacement coming in two versions: featuring 2 or 4 slotted vent .