American tuner Vorsteiner is working on a new tuning package for the BMW M6 Coupe F12 and Cabriolet F13 models. They just released this photo on their Facebook page as a teaser, and announced the first stage of tuning will include aero parts and a sport exhaust system. Looking at this picture we can spot the new spoiler lip, blacked-out grille, and Vorsteiner wheels. It should also have a rear diffuser, trunk spoiler, and new tailpipes.
Stay tuned for more details and pictures.