Girodisc Porsche 996 / 997 Rear Rotors (with Spacers & Bolts)
The Girodisc A2-032A Rear Rotor Kit is a precision-engineered performance upgrade for Porsche 996 and 997 models. Designed as a direct-fit replacement for the OE rotors, this 2-piece system includes caliper spacers and longer bolts to accommodate the larger 350mm rotor size—delivering improved braking torque, heat capacity, and cooling efficiency without altering factory bias or ABS operation.
Enhanced Performance & Lightweight Design
Each rotor assembly features a 6061-T6 aluminum hat mated to Girodisc’s proprietary cast iron rotor ring. This 2-piece configuration significantly reduces unsprung weight while maintaining strength and durability. The curved internal vane design acts as a centrifugal pump, pulling air through the disc to increase cooling capacity during high-performance driving. The result is sharper braking response and reduced fade under repeated heavy use.
Floating Mount System & Anti-Noise Technology
Girodisc rotors use a floating mount system with 10 high-strength alloy steel drive pins manufactured in-house in the USA. The pins are cadmium-plated for corrosion resistance and secured by class 12.9 cap screws with hardened washers. Anti-noise spring washers on the rotor side prevent rattling, allowing for quiet street operation while maintaining full racing functionality. This float design lets the rotor self-center between pads and expand with heat for consistent braking performance.
Vehicle Fitment
- Porsche 996 Carrera / Carrera 4 / Carrera 4S
- Porsche 997 Carrera / Carrera S / Carrera 4 / Carrera 4S
- Includes caliper spacers and longer bolts for 350mm rotor conversion
- Direct bolt-on installation, no modifications required
Technical Specifications
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CMS Number: A2-032A
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Position: Rear
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Rotor Diameter: 350mm
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Design: 2-piece floating assembly
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Material: Proprietary cast iron with 6061-T6 aluminum hat
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Vane Design: Curved directional vanes for increased cooling
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Hardware: Cadmium-plated drive pins, class 12.9 cap screws, anti-noise washers
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Rebuildable: Yes — replace rotor rings and reuse aluminum hats
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Sold/Price: Per pair
FAQs
Is this kit a direct replacement for my OEM rotors? Yes. It includes all necessary spacers and hardware for an easy bolt-on upgrade with factory calipers.
Do these rotors affect brake balance? No. The system maintains factory bias and ABS efficiency, ensuring OEM-level stability and braking control.
How much larger are these than stock rotors? These rotors measure 350mm in diameter, offering improved braking leverage and thermal performance over OEM discs.
Can I replace just the rings later? Yes. Girodisc rotors are fully rebuildable—simply replace the iron rings and reuse the aluminum hats.
Upgrade your Porsche 996 or 997 with the Girodisc A2-032A Rear Rotor Kit for enhanced stopping power, reduced weight, and long-lasting performance engineered for both street and track use.
