At the core of the Unimog U 4023 and Unimog U 5023's all-terrain capabilities is the cranked vehicle frame with welded tubular cross members. Thanks to its torsional flexibility in combination with torque tube technology and the 3-point mounting of engine, transmission, cab and body, a diagonal torsion of up to 600 mm is possible. As the frame is completely welded, it possesses great torsional resistance. At the same time the cranked frame makes possible both a low centre of gravity and high ground clearance. The Unimog portal axles also ensure this. The asymmetrical arrangement of the axle differentials makes it easier to ride over obstacles.