PURPOSE: To make mounting rigidity small at the time of a winding up amount being limited, by combining a divided final decelerator side propeller shaft with a final decelerator so as not to be bent, and also providing a mechanism which supports partially the weight of the final decelerator, at the final decelerator side propeller shaft.

CONSTITUTION: The 1st propeller shaft 4 which is connected to a transmission side through the 1st joint 1, is combined with the 2nd propeller shaft 5 by means of the 2nd joint 2, and connection between the 1st propeller shaft 4 and the 2nd propeller shaft 5 is bendable. Meanwhile, connection between the 2nd propeller shaft 5 and a final decelerator is made not to be bendable. For example, the 2nd propeller shaft 5 and the final decelerator are coupled by means of a flange coupling portion 12. And when a drive system is inputted with torque, a shaft mount 15 is provided at the required position of the 2nd propeller shaft 5 through a center bearing 7 in order to reduce load borne by a front differential mount 10 and a rear differential mount 11, and a support sharing mechanism is constituted.