High performance brake kits for road and track use Patented StopTech Aerorotors brake discs for optimized airflow Patented bell made of solid aluminum for increased air flow Ultra-high stiffness StopTech calipers with patented adapters to simplify installation Steel-braided StopTech brake lines for better feel of the brake pedal. All accessories necessary for installation. Components made in the USA. Full ISO / TS 16949: 2009 certification. Application list: BMW 228i (F22) 15-BMW 420d (F32) 13-BMW 420d (F33) 13- BMW 420d (F36) 13-BMW 420i (F32) 13-BMW 420i (F36) 14-BMW 428i (F32) 13-BMW 428i (F33) 13-BMW 428i (F36) 14-BMW 430d (F32) 13-BMW 435d (F32) 13-BMW 435i (F32) 13-BMW 435i (F33) 13-BMW 435i (F36) 14-Disc type: two-piece Fitting side: rear High performance braking sets for road and track use Patented StopTech Aerorotors brake discs for optimized airflow.Patented bell, made of solid alum inum, increasing airflow.StopTech calipers with ultra-high stiffness with patented adapters simplifying assembly.Brake hoses in Steel StopTech for better feel of the brake pedal.All installation accessories for assembly.Components manufactured in the USA.Full ISO / TS 16949: 2009 certification.Application list: BMW 228i (F22) 15-BMW 420d (F32) 13-BMW 420d (F33) 13-BMW 420d (F36) 13-BMW 420i (F32) 13-BMW 420i (F36) 14-BMW 428i (F32) 13-BMW 428i (F33) 13-BMW 428i (F36) 14-BMW 430d (F32) 13-BMW 435d (F32) 13-BMW 435i (F32) 13-BMW 435i (F33) 13-BMW 435i ( F36) 14-Disc type: two-pieceFitting Position: rear