Abstract: A stiffening structure of a two-track vehicle is provided in the form of a shear field designed as a shaped sheet-metal piece. The shear field is fastened to a sub-frame acting as an axle support and optionally to longitudinal members of the vehicle and furthermore is supported on lateral door sills of the vehicle body. The support is provided by supporting arms formed in the shaped sheet metal piece. The supporting arms or further segments of the shear field can be stiffened by auxiliary sheets in such a way that there is a shell profile formed by a top shell and a bottom shell as viewed in the direction of the vehicle vertical axis.