An agricultural implement having a tool bar extension. One agricultural implement includes a tool bar assembly having a central tool bar, a first wing tool bar rotatably coupled to a first end of the central tool bar, a second wing tool bar rotatably coupled to the first wing tool bar, a third wing tool bar rotatably coupled to a second end of the central tool bar, and a fourth wing tool bar rotatably coupled to the third wing tool bar. The agricultural implement also includes ground engaging tools. At least a portion of the ground engaging tools is coupled to the tool bar assembly. The agricultural implement includes a tool bar extension rigidly coupled via fasteners to a first distal end of the second wing tool bar, or to a second distal end of the fourth wing tool bar.