Making its debut at this past SEMA convention, the Vorsteiner GTRS4 widebody package is now finally available. If you haven’t already heard about this kit, then now is the time to pay attention. Vorsteiner designed brand new panels for over half of the car! Considering that the car was released not too long ago, this is an amazing task. The kit includes a front bumper, widened front fenders, side skirt extensions, widedened quarter panels and lastly a rear bumper. All of which join together to make one unmistakable BMW M4.