GiroDisc D1-066 Slotted Front Rotor Rings - Porsche 911 GT3 Cup (997)

GiroDisc slotted replacement rotor rings, part number D1-066, for the Porsche 911 GT3 Cup (997). These are the front friction rings for a GiroDisc two-piece rotor assembly.

• Position: Front
• Surface: slotted
• Type: replacement rotor rings for a two-piece assembly
• Hats, bobbins and hardware are not included

A two-piece rotor separates the iron friction ring from an alloy hat, which drops unsprung and rotating weight and lets the ring expand under heat without distorting the mounting face. Replacement rings let that rotor be refreshed without buying a whole new assembly: the worn iron is swapped and the existing hats and hardware carry over. Because ring, hat and hardware combinations vary between programs, match the ring part number to the hats already on the car before ordering.

Fitment: Porsche 911 GT3 Cup (997). Source detail on this part is limited, so confirm fitment by year, trim, hat style, and brake package before ordering.

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