When PFC Brakes exceeded the seemingly impossible criteria that led them to become the original equipment supplier for the 991 Cup and GT4 Clubsport factory race cars, a new braking performance benchmark was set for race cars and sports cars. Using this race-proven technology,    Cup Challenge Brake Kit by PFC is available in 405/380mm and 380/380mm. Direct bolt-on for all 991-series cars(GT3/GT3RS/GT2RS/Turbo/Turbo S/Carrera models) and 981-series cars(GT4/Cayman/Boxster/S). Also available for most 997/987/996-series cars(GT3/GT3RS/GT2/Turbo/Cup). Cup Challenge Brake Kit by PFC features PFC Zero-Drag(TM) Nickel Electroplated ultra-stiff Monobloc calipers, 6-piston front/4-piston rear PFC vent-cooled titanium piston caps PFC Zero-Failures(TM) 2-piece floating rotors, 405/380mm or 380/380mm PFC rotor hats have a dual bolt pattern for Centerlock and for 5-lug hub PFC stainless steel caliper studs with Jet nuts PFC 22mm-thick brake pads(PFC 64 high-perf street, PFC 08, or PFC 11 compound) Available “Endurance” option for 26mm-thick pads Available  DOT-spec banjo-type stainless steel braided brake hoses Designed to work with OEM GT3 master cylinder and booster Fits most OEM wheels