Baer used state of the art technology to build their Extreme brake kits. Based off a forged mono-block the flagship of the Baer line is perfectly at home on the street or on track. Mounted to a 14 or 15" rotor in either a one piece design rotor in the Extreme line or a 14 or 15" two piece design in the Extreme+ line. Baer is the only manufacturer to currently have a 6 piston caliper available for both the front and rear, Baer specs out the rear piston sizes to function properly with your vehicles braking needs.