That's why the 718, 718 Style Edition and 718 S models are equipped with four-piston aluminum monobloc fixed calipers. The brake calipers are Black on the 718 Boxster, 718 Cayman and 718 Style Edition models, and Red on the S and GTS 4.0 models. The brake discs have a diameter of 12.99 inches at the front and 1.77 inches at the rear.