GIRODISC A1-154 Front Brake Rotor Kit for PORSCHE 991 GT3 / GT3RS / GT2RS / Cayman GT4 / GT4RS (410x36 mm, PCCB Replacement)

Description GIRODISC A1-154 Front Brake Rotor Kit for PORSCHE 991 GT3 / GT3RS / GT2RS / Cayman GT4 / GT4RS (410x36 mm, PCCB Replacement)

The GIRODISC A1-154 front rotor kit is engineered as a direct iron rotor replacement for Porsche models originally equipped with PCCB systems. Compatible with pad shapes designed for factory iron rotor GT3 models, this solution allows for optimal pad availability while maintaining performance and reducing weight. The reduced annulus size versus PCCB pads helps balance rotor mass without compromising effectiveness on track.

Each rotor features a two-piece floating design, comprising a CNC-machined 6061-T6 aluminum hat and a proprietary cast iron disc. Developed and produced entirely in the USA, the disc incorporates a motorsport-derived curved vane structure for superior internal cooling. The floating interface employs 12 cadmium-plated alloy steel pins and class 12.9 fasteners, enabling radial and axial float while controlling noise and thermal expansion through anti-noise spring washers.

• Direct bolt-on PCCB replacement with compatible GT3 iron rotor pad shape
• Proprietary cast iron disc and curved vane cooling structure
• Floating rotor design with cadmium-coated steel hardware
• Precision-machined 6061-T6 aluminum hat made in the USA
• Reduced weight and optimized heat management for track use

Specifications:

• Disc Finish: Straight Slotted
• Disc Vane Style: Curved Vane
• Material: Cast Iron
• Disc Type: Vented
• Disc Diameter: 410 mm
• Min Thickness: 34.0 mm
• Max Thickness: 36.0 mm