Porsche 996 GT3 Cup Front Rotors
The Girodisc Front Rotors for the Porsche 996 GT3 Cup are designed as a high-performance, lightweight replacement for the factory brake discs. Precision-engineered to deliver superior cooling, consistency, and durability, these rotors maintain factory balance and ABS performance while dramatically reducing unsprung and rotational weight for improved acceleration and handling.
Direct Replacement Rotors for the 996 GT3 Cup
The Girodisc system is a true bolt-on replacement for the OEM front rotors—no modifications are required. By upgrading to Girodisc’s two-piece floating rotor design, you preserve the car’s factory brake bias and ABS calibration while gaining a significant performance advantage. Each Girodisc front rotor weighs approximately 21.0 lbs compared to 25.6 lbs for the stock units, reducing weight where it matters most and improving suspension response and steering feedback.
Vehicle Fitment
These Girodisc Front Rotors are engineered specifically for:
- Porsche 996 GT3 Cup (All model years)
Direct OEM replacement for factory rotors on Porsche 996 GT3 Cup cars. Compatible with original calipers, pads, and mounting hardware.
Features
The central hat section is made from U.S.-sourced 6061-T6 aircraft-grade aluminum, providing strength and reduced unsprung weight. The rotor rings are cast from Girodisc’s proprietary iron alloy, poured and machined entirely in-house in the USA. Each disc incorporates a curved vane internal design developed in racing to act as a centrifugal pump, pulling cooling air through the rotor to dissipate heat and reduce fade under extreme use.
The floating mount system uses 10 high-strength alloy steel drive pins, cadmium plated for long-lasting corrosion resistance and secured with class 12.9 cap screws and hardened washers. Anti-noise spring washers on the rotor side allow for thermal expansion while preventing rattles and noise, ensuring a smooth, quiet operation. The floating design also enables the rotor to self-center between pads, maintaining optimal brake feel and consistent pad contact throughout the temperature range.
Once installed, only the iron rotor rings need replacement as they wear, allowing the aluminum hats to be reused—significantly lowering long-term operating costs while delivering world-class performance on the track.
FAQs: Porsche 996 GT3 Cup Front Rotors
Do these rotors fit the factory GT3 Cup calipers? Yes, the Girodisc system bolts directly to the car and is fully compatible with the factory GT3 Cup calipers and pad shape.
How much lighter are these than OEM rotors? Each Girodisc front rotor saves approximately 4.6 lbs compared to the stock unit, improving both suspension response and acceleration.
Are these rotors suitable for endurance racing? Absolutely. Girodisc rotors are designed to withstand sustained high temperatures and heavy use in professional motorsport environments.
Do I need to change brake pads when installing Girodisc rotors? You can continue using the factory pad shape, or upgrade to any high-performance compound compatible with the GT3 Cup calipers.
Can I replace just the iron rings later? Yes, Girodisc rotors are designed for serviceability—once installed, only the iron rings need replacing when worn.
Enhance your Porsche 996 GT3 Cup’s braking power with the Girodisc Front Rotors—precision-engineered, track-proven, and made entirely in the USA for professional-level performance and reliability.
