AutoTecknic Lower Reinforcement Brace - F30 3-SeriesProduct Description AutoTecknic strut brace is designed to add an extra element of rigidity to a car's chassis around the suspension pick up points. This can greatly improve the handling characteristics as the suspension geometry alters less under cornering forces which helps minimize chassis flex during the hardest cornering. AutoTecknic strut braces provide benefits for both streets and track driven BMW's. This item fits the following vehicles: 2012