The UG1/11 six-speed transmission and transfer case is one unit in the Unimog. This unit is made of cast steel and has been modified with PTO capability. This unit has also been modified by Expedition Imports with supplementary crawler gear VOG1/11. According to McKee, these gears give the 'Mog the ability to crawl at approximately 347:1. In this photo, you can also see the aforementioned front torque tube as well as the linkage that activates the front locker.