GiroDisc GiroDisc Porsche 911 GT3 Cup (997) Slotted Front Rings
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GiroDisc Porsche 911 GT3 Cup (997) Slotted Front Rings

GiroDisc
GIRD1-066
D1-066
Brake Rotors - 2 Piece
11 Units In Stock - Ships Next Business Day
$ 1,030.00
$ 1,030.00

SKU: D1-066

GiroDisc Porsche 911 GT3 Cup (997) Slotted Front Rings D1-066 2006-2011

GiroDisc D1-066 Slotted Front Rings serve as direct-replacement brake rotors for 2006-2011 Porsche 911 GT3 Cup (997) race cars. These 380mm x 34mm rings feature aggressive slotting to clear brake dust gases and water for reliable track braking. Pair them with matching hats for reduced weight and enhanced heat management during high-demand sessions.

Key Features

  • Slotted Surface: Narrow slots wipe away debris and gases to maintain pad-to-rotor contact and consistent friction under load
  • High-Carbon Steel Rings: 72 Rockwell hardness rating resists cracking and warping from repeated track abuse
  • Curved Vane Design: Internal vanes channel cooling air through the rotor core to lower operating temperatures
  • Lightweight Build: Each ring weighs 10.6 lbs for a pair total of 21.2 lbs reducing unsprung mass versus OEM
  • Precision Dimensions: 380mm diameter x 34mm thickness matches factory specs for bolt-on fit with stock calipers

Product Notes

  • Rings only sold as pair hats available separately or reuse compatible OEM hats
  • Perform proper bedding process after installation to ensure optimal performance
  • Packaged as pair in protective foam-lined box for safe transit

Installation Notes

  • Professional installation recommended.
  • Use anti-seize on hat-to-ring hardware during assembly
  • Compatible with OEM GT3 Cup calipers and hardware torque to 30 ft-lbs

This Part Fits

Year Make Model Submodel
2006-2011 Porsche 911 GT3 Cup (997)

Why Choose GiroDisc?

  • Track-tested in Porsche GT3 Cup and Supercup series worldwide
  • CNC-machined in USA with aircraft-grade materials
  • Engineered for exact fit and race-level durability

Frequently Asked Questions

  • Q: Will D1-066 fit standard street GT3 models?
    A: No these rings fit GT3 Cup (997) race cars only due to specific hub and caliper design
  • Q: What material makes up the rotor rings?
    A: High-carbon ductile iron with zinc plating for corrosion resistance and heat tolerance over 1200°F
  • Q: What warranty coverage applies?
    A: Limited lifetime warranty against manufacturing defects when used with proper bedding and maintenance

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Custom double-walled box 20in x 20in x 8in
  • Weight: 46 lbs shipping weight (pair)

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