Front strut brace for BMW 520i / 523i / 525i / 528i /530i E39 chassis 1996-2003. Each Racing Dynamics strut brace was design by professional race car engineers for chassis stiffness and ease of mounting. Each strut brace is designed using our specially designed extrusion for increased stiffness and properties to allow bending of the alloy without crimping at the bends or need to cut and weld multiple pieces (an inherently weaker design). End plates are machined on high speed CNC machining centers for exactness and repeatability ensuring the BMW owner of the finest strut brace available anywhere.