Complex sentence: The elastic elements were longitudinal torsion bar, in place of the usual coil springs, actuated by the innermost side of the lower A-arms and connected to the chassis by a single transverse crossbeam.
Split into simpler sentences: The elastic elements were longitudinal torsion bar, in place of the usual coil springs. Hinged to the innermost side of the lower A-arms, the torsion bars were connected to the chassis by a single transverse crossbeam.