At Hirschvogel, the powertrain encom-passes the following: The propeller shaft (in rear-wheel drives), the differential, as well as half shafts with the corresponding constant-velocity joints.  Here, too, thecompanies of the Hirschvogel Automotive Group produce important parts requiring specialist production know-how.  Typical components include tripods and rzeppa stub axles for constant velocity joints, bevel drive pinions, and disk carriers fortransfer gears in four-wheel drives.