GiroDisc 991 GT3/GT3RS/GT2RS Slotted Front Brake Rotors — Fits 2012-2019 Porsche 911

SKU: GIRA1-146
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Sale price$1,859.38
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About GiroDisc

GiroDisc engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full GiroDisc lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

High-Performance GiroDisc Slotted Front Rotors

Experience superior stopping power and heat dissipation with GiroDisc slotted front rotors, specifically engineered for the Porsche 991 GT3, GT3RS, and GT2RS (excluding PCCB models). These two-piece rotors are designed to replace your factory discs, offering a direct bolt-on solution that significantly improves braking consistency during aggressive driving.

Precision Engineering for Porsche

GiroDisc utilizes a proprietary iron alloy for the rotor ring, providing exceptional durability and resistance to cracking under extreme thermal stress. The aluminum hat is machined from 6061-T6 aircraft-grade aluminum, reducing unsprung weight and improving overall vehicle handling.

  • Direct replacement for factory Porsche 991 front rotors
  • Advanced slotted design for improved pad bite and debris clearing
  • Lightweight 6061-T6 aluminum hat construction
  • Floating mount system prevents rotor warping
  • Compatible with standard performance brake pads

Whether you are hitting the track for a weekend session or navigating winding canyon roads, these rotors provide the confidence you need to push your Porsche to the limit. The slotted surface ensures that gases and dust are effectively cleared from the pad-to-rotor interface, maintaining optimal friction levels in all conditions. Trust the experts at GGCRACING for your next brake upgrade.

Product Details

Product Description
Part Numbers
Sizing & Fit

About GiroDisc

GiroDisc engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full GiroDisc lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

High-Performance GiroDisc Slotted Front Rotors

Experience superior stopping power and heat dissipation with GiroDisc slotted front rotors, specifically engineered for the Porsche 991 GT3, GT3RS, and GT2RS (excluding PCCB models). These two-piece rotors are designed to replace your factory discs, offering a direct bolt-on solution that significantly improves braking consistency during aggressive driving.

Precision Engineering for Porsche

GiroDisc utilizes a proprietary iron alloy for the rotor ring, providing exceptional durability and resistance to cracking under extreme thermal stress. The aluminum hat is machined from 6061-T6 aircraft-grade aluminum, reducing unsprung weight and improving overall vehicle handling.

  • Direct replacement for factory Porsche 991 front rotors
  • Advanced slotted design for improved pad bite and debris clearing
  • Lightweight 6061-T6 aluminum hat construction
  • Floating mount system prevents rotor warping
  • Compatible with standard performance brake pads

Whether you are hitting the track for a weekend session or navigating winding canyon roads, these rotors provide the confidence you need to push your Porsche to the limit. The slotted surface ensures that gases and dust are effectively cleared from the pad-to-rotor interface, maintaining optimal friction levels in all conditions. Trust the experts at GGCRACING for your next brake upgrade.

Product Details

Product Description

About GiroDisc

GiroDisc engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full GiroDisc lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

High-Performance GiroDisc Slotted Front Rotors

Experience superior stopping power and heat dissipation with GiroDisc slotted front rotors, specifically engineered for the Porsche 991 GT3, GT3RS, and GT2RS (excluding PCCB models). These two-piece rotors are designed to replace your factory discs, offering a direct bolt-on solution that significantly improves braking consistency during aggressive driving.

Precision Engineering for Porsche

GiroDisc utilizes a proprietary iron alloy for the rotor ring, providing exceptional durability and resistance to cracking under extreme thermal stress. The aluminum hat is machined from 6061-T6 aircraft-grade aluminum, reducing unsprung weight and improving overall vehicle handling.

  • Direct replacement for factory Porsche 991 front rotors
  • Advanced slotted design for improved pad bite and debris clearing
  • Lightweight 6061-T6 aluminum hat construction
  • Floating mount system prevents rotor warping
  • Compatible with standard performance brake pads

Whether you are hitting the track for a weekend session or navigating winding canyon roads, these rotors provide the confidence you need to push your Porsche to the limit. The slotted surface ensures that gases and dust are effectively cleared from the pad-to-rotor interface, maintaining optimal friction levels in all conditions. Trust the experts at GGCRACING for your next brake upgrade.

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