Girodisc Ferrari Portofino / Roma Rear Iron Rotor Conversion
The Girodisc A2-278 Rear Iron Rotor Conversion is engineered to replace the factory rear rotors on Ferrari Portofino and Roma models, offering a robust, high-performance iron alternative built for track use and aggressive street driving. This system integrates seamlessly with the OEM brake setup while providing enhanced durability, cooling, and serviceability.
Design & Engineering
Each rotor merges a 6061-T6 aluminum hat with a proprietary high-carbon cast iron ring, produced and polished in-house. This 2-piece floating configuration allows thermal expansion without distortion. The rotor’s 48 curved vanes act as an internal centrifugal pump, pulling air inward from the hub to cool the disc efficiently under repeated demands.
The floating mount system uses cadmium-plated steel drive pins in concert with Belleville washers and spring clips to maintain pad alignment, prevent rattle, and allow precise rotational movement. This ensures quiet operation during street use while retaining full racing capability.
Vehicle Fitment
- Ferrari Portofino (non-CCM models)
- Ferrari Roma (excluding carbon ceramic brake variants)
Technical Specifications
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Part Number: A2-278
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Position: Rear
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Material: High-carbon cast iron rotor ring with aluminum hat
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Vane Count: 48 curved directional vanes
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Hardware: Cadmium-plated steel drive pins, Belleville washers, spring clips
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Rebuildable: Replace rotor rings while reusing hats and hardware
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Sold/Price: Per pair
Advantages
- Improved thermal capacity over OEM cast rotors
- Reduced replacement cost compared to carbon ceramic systems
- Floating design maintains brake consistency and pad centering
- Quiet operation with no rattle in street use
- Precision-engineered and manufactured in the USA
FAQs for Girodisc A2-278
Does this require modifications? No. It’s a direct fit replacement for non-CCM Portofino and Roma rears.
Is this suitable for track use? Yes. The conversion is designed to handle elevated heat and repeated high-load braking cycles.
Can I replace only the iron rings? Yes. Replacement rotor rings are available for long-term maintenance without replacing the aluminum hats.
Upgrade your Ferrari Portofino or Roma with Girodisc’s rear iron rotor conversion—premium cooling, lower operating cost, and consistent brake performance.
