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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