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
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Direct PCCB-to-iron conversion: Replace fragile carbon-ceramic rotors with high-strength iron for enhanced durability and performance.
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OEM compatibility: Fully compatible with stock calipers and unmodified pads for a true plug-and-play installation.
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Curved vane ventilation: 12-directional vanes actively pull air through the disc to manage rotor temperature and prevent fade.
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Floating mount hardware: Cadmium-plated steel drive pins with anti-noise spring washers allow smooth thermal expansion while preventing rattle.
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Serviceable design: Reuse the aluminum hats and replace only the iron rings when worn for lower long-term cost.
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Made in the USA: All Girodisc rotors are engineered, cast, and machined in-house to precise racing standards.
Girodisc A1-127 FAQs
Will these work with OEM pads? Yes—unlike many aftermarket solutions, Girodisc rotors allow use of unmodified factory pads.
Can I use these for track driving? Absolutely. Girodisc rotors are designed for high-temperature operation and consistent performance lap after lap.
Will they change my brake bias or ABS? No. They are designed to maintain factory geometry and braking characteristics.
Are they quieter than carbon-ceramic brakes? Yes, the anti-noise washers eliminate rattle while maintaining full floating function.
How are they sold? Sold and priced per pair.
Upgrade your 997 GT3 or GT2 with Girodisc’s 380mm floating rotors—lighter, cooler, and engineered for true motorsport-level stopping power without compromising OEM reliability.
