A drive shaft is part of an automobile that is designed to transfer power from the transmission to the drive wheels. The driveshaft is a steel tube which is used to transmit power from the transmission output shaft to the differential. On some models, the driveshaft consists of concentric steel tubes with rubber elements. To accommodate different model wheelbase and transmission combinations, driveshaft may differ in length, diameter and the type of slip yoke.

Each shaft is installed in the same procedure. The splined slip yoke are held in alignment by a bushing in the transmission rear extension. The slip yoke is responsible for the fore and aft movement of the driveshaft as the differential assembly moves up and down. Like drive shaft, a drive shaft assembly is suited for power transmission in motor vehicles wherein a drive shaft has a universal joint connected to at least one end with a sealing boot attached in the ceiling engagement.

The drive shaft assembly like the Pro Comp drive shaft assembly is found between the outer joint member of the universal joint and the drive shaft. The drive shaft assembly encompasses first and second telescoping shafts supported above ground level. A motor is coupled to the first shaft for extending it in an axial direction. Another motor is connected to the second shaft for rotating the second about its longitudinal axis. These shafts are connected by a coupling so the second shaft rotates the first shaft in all positions of the first shaft. The first shaft terminates at a free end in a frictional engageable end portion.