Track Day Brake Disc Set, Front. Porsche 997.2 GT3 / GT3 RS / GT2 RS 380x34mm 2009–13  ❭  103.9012A

Brembo front Track Day brake disc set for Porsche 997.2 GT3, GT3 RS and GT2 RS applications. The set contains two 380 x 34mm two-piece slotted brake discs intended for demanding track use.

Fits

• Porsche 997 (911) MK2 2009–2012
• Porsche 997 MKII GT3 / GT3 RS 2010–11
• Porsche 997 MKII GT2 RS 2011–13

Not suitable as PCCB conversion 991G
Check fitment for your specific vehicle, including model, year, brake system and wheel or caliper clearance, before ordering.

What This Product Does

The two-piece construction separates the braking ring from the bell, helping the assembly manage repeated thermal cycles. Internal ventilation and a track-focused slot pattern support consistent contact between the disc and brake pad during circuit driving.

Functions

• Renews both front brake discs as a matched axle set
• Uses internal vanes to channel cooling air through each disc
• Provides slotted friction surfaces for pad contact and gas evacuation
• Directly replaces the relevant original disc assemblies
• Supports braking systems exposed to repeated high-temperature use

Technical Details

• Manufacturer: Brembo
• Reference: 103.9020E
• Contents: two front brake disc assemblies
• Disc dimensions: 380 x 34mm
• Construction: two-piece, internally ventilated and slotted
• Cooling design: 72 vanes with a reduced air gap
• Slot layout differs from the standard GT eight-slot pattern
• Supplied without a homologation fiche
• Diagram reference: 99735140991; grey cast-iron brake applications also reference 997.341.901.00

Symptoms of Fault

• Vibration or judder through the pedal or steering under braking
• Visible heat marks, surface cracking or excessive disc wear
• Reduced consistency after repeated heavy braking
• Squealing, scraping or other abnormal brake noise
• Uneven brake-pad wear or glazing
• A longer or inconsistent pedal after hard circuit use

Why Replacement Matters

Brake discs subjected to frequent track use can develop wear, heat damage or friction deposits that affect pedal consistency and pad contact. Replacing worn components helps restore correct braking-system operation. Inspect the pads, calipers, fluid and associated hardware at the same time, and follow the recommended bedding-in procedure after installation.

FAQs

• Does this set include both front discs?
  Yes. It contains two brake disc assemblies for the front axle.
• What fluid should be used for track driving?
  Use brake fluid with a specification appropriate for the vehicle and intended operating temperatures. Replace aged fluid before demanding use.
• Will these discs clear my wheels?
  Confirm the existing caliper, wheel and brake-system specification before installation.
• Should the brake pads be inspected?
  Yes. Check pad condition, compound compatibility, wear pattern and remaining thickness when changing the discs.
• Is bedding-in required?
  Follow the disc and pad manufacturers’ bedding procedure to establish an even friction layer.

Additional Notes

This product is a special order item, allow 2-3 weeks for delivery.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

103.9012A

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