Girodisc Porsche 991 Cup, GT4 Clubsport Front Replacement Rings (380x32)
Restore the elite braking performance of your Porsche Cup or Clubsport with Girodisc D1-238 380x32mm front replacement rings. Engineered for uncompromising precision, these rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Crafted from high-carbon cast iron, they provide superior heat management, fade resistance, and consistent pedal feel under extreme race conditions.
Vehicle Fitment
Compatible with:
• Porsche 991 Cup (2013–2019, front)
• Porsche 981 GT4 Clubsport (front)
• Porsche 718 GT4 Clubsport (front)
Note: Designed exclusively for Girodisc 380x32mm two-piece front rotor systems. Not compatible with OEM PCCB or one-piece rotors.
Features
• Sold as a left/right pair with full floating hardware kit
• Direct replacements for Girodisc 380x32mm two-piece front rotors
• CNC-machined from proprietary high-carbon cast iron for superior strength and cooling
• Directional curved vanes maximize airflow and heat dissipation
• Balanced and precision-machined for vibration-free performance
• Maintains factory brake bias and ABS calibration
• Designed exclusively for Girodisc aluminum hats – not compatible with OEM or other brands
Specifications
• Diameter: 380mm
• Thickness: 32mm
• Position: Front
• Material: High-carbon cast iron
• Mount type: Floating two-piece system
• Includes: Two rotor rings and new hardware kit
• Sold/priced per pair
Girodisc D1-238 Porsche 991 Cup / GT4 Clubsport Front Replacement Ring FAQs
Do these fit factory Porsche Cup rotor hats? No. The D1-238 rings are designed exclusively for Girodisc aluminum hats and will not mount to OEM or AP Racing hats.
Can they handle sustained race heat cycles? Absolutely. Girodisc’s high-carbon alloy and curved vane design deliver outstanding thermal capacity for endurance and sprint racing.
Are these compatible with the Porsche 718 GT4 Clubsport? Yes. They fit all 981 and 718 GT4 Clubsport models equipped with 380x32mm front Girodisc systems.
How do they compare to OEM Cup rotors? Girodisc rotors offer reduced unsprung weight, lower running costs, and more consistent friction characteristics under repeated braking.
Upgrade your Porsche 991 Cup or GT4 Clubsport with Girodisc D1-238 380x32mm front replacement rings — precision-engineered for cooling, endurance, and repeatable braking control lap after lap.
