A powered tailgate system in which a direct driven rack 44 is connected to one end of a rod 52, one end of a curved arm 54 is connected to the other end of the rod 52, the other end of the curved arm 54 is connected to a tailgate 15, an arm side slider portion 60 which curves concentrically with the curved arm 54 is provided on the curved arm 54, and a plurality of load receiving portions 87 to 90 adapted to be brought into sliding contact with the arm side slider portion 60 so as to receive a load are disposed on a vehicle body side at intervals along a traveling direction of the curved arm 54.