Racing Dynamics Front Strut Bar 1965-1989 Porsche 911/912/930Porsche Front strut brace for Porsche 911 912 930 1965 89. Each Racing Dynamics strut brace was designed by professional race car engineers for chassis stiffness and ease of mounting. Our custom rectangular extrusion has an internal web design to increase its torsion and longitudinal rigidity. Features: These properties to allow bending of the alloy without crimping at the bends or need to cut and weld multiple pieces (an inherently weaker design).