Girodisc Porsche 380mm Rear Rotors
Upgrade your Porsche’s braking system with Girodisc’s 380mm rear iron rotors, engineered as a direct replacement for OEM carbon-ceramic discs. This setup offers superior heat capacity, consistent braking performance, and reduced replacement costs, all while maintaining OEM fitment and balance for high-performance driving.
Vehicle Fitment
Porsche 911 Turbo / Turbo S (991.1 & 991.2)
Porsche 911 GT3 (991.1 & 991.2)
Porsche 911 GT3 RS (991 Series)
Porsche 911 GT2 RS (991.2)
Compatible with OEM carbon-ceramic brake systems and factory Brembo calipers.
Direct Replacement Iron Rotor System
The Girodisc system bolts directly to the factory hubs and calipers—no modifications necessary. Each rotor features a CNC-machined 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for expansion under heat without distortion, ensuring even pad wear and consistent pedal feel. Curved internal vanes act as centrifugal pumps, drawing cooling air through the disc for excellent thermal control.
Features
• Direct replacement for OEM PCCB 380 mm rear rotors
• Billet 6061-T6 aluminum hats with hard-anodized finish
• Proprietary high-carbon cast-iron rings cast and machined in the USA
• Floating mount system with 10 cadmium-plated steel drive pins
• Anti-noise spring washers eliminate rattle while allowing thermal float
• Curved vane design improves airflow and heat dissipation
• Fully rebuildable—replace only the iron rings when worn
• Sold/priced per pair
Girodisc A2-155 Rear Rotor FAQs:
Can these rotors replace the OEM PCCB carbon-ceramic discs? Yes. The A2-155 rotors are a direct bolt-on replacement designed to fit factory hubs and calipers without adapters.
How do iron rotors change braking feel? They offer a firmer, more predictable pedal with better modulation and heat control during extended sessions, making them ideal for track use.
Are they suitable for daily driving? Absolutely. Despite their race-bred design, Girodisc rotors operate quietly and smoothly on the street while maintaining superb durability.
What maintenance advantages do these have over PCCB? Iron rotors are rebuildable and far more affordable to service—simply replace the friction rings when worn rather than the entire assembly.
Enhance your Porsche’s stopping power with Girodisc 380 mm rear rotors—engineered for the perfect balance of reliability, performance, and precision braking control.
