Z3M Big Brake Kit Front LinesDescription These brake lines work with our Front Porsche Brembo Big Brake Kit. They are a DOT approved, high quality piece. The lines have a rubber grommet installed which locates it to the strut housing and prevents chafing of the line. They are an excellent alternative to the Stoptech BBK rear brake lines. Installation is made easier with the elimination of banjo fitting and copper crush washers. Simply screw the small male fitting into the caliper