A1-127 Girodisc Porsche 997 GT3 380mm Front Rotors
Porsche 997 GT3 380mm Front Rotors The Girodisc 2-piece floating rotor system is a direct, high-performance replacement for the OEM PCCB rotors found on the Porsche 997.1 GT3 and GT2. No modifications are needed—these rotors bolt directly to the car and allow the continued use of factory pads and calipers, maintaining original brake balance and ABS functionality while delivering superior heat control and serviceability. Manufactured in the USA, the Girodisc assembly combines a lightweight 6061-T6 aluminum hat with proprietary high-carbon cast iron rotor rings. The curved vane internal design works as a centrifugal pump to draw cooling air through the rotor, significantly improving thermal stability and fade resistance under repeated hard braking. Precision-Engineered Performance Vehicle Fitment Porsche 997.1 GT3 Porsche 997.1 GT2 Girodisc A1-127 Features Direct PCCB-to-iron conversion: Replace fragile carbon-ceramic rotors with high-strength iron for enhanced durability and perfor