D1-066 Girodisc 380x34mm Front Replacement Rotor Rings
Maintain the stopping power of your high-performance braking system with Girodisc D1-066 380x34mm front replacement rings. Designed for use with Girodisc two-piece rotor assemblies, these rings bolt directly to your existing aluminum hats using the included floating hardware kit. Each rotor is machined from Girodisc’s proprietary high-carbon cast iron alloy, delivering exceptional thermal capacity, fade resistance, and consistent friction for both street and track applications.
Vehicle Fitment
Universal fit for vehicles using Girodisc 380x34mm two-piece front rotor systems, including:
• Performance brake conversions using 380x34mm rotors
• Custom Brembo GT, AP Racing, and StopTech systems adapted for Girodisc hardware
Note: These replacement rings are designed exclusively for Girodisc aluminum hats. Not compatible with OEM one-piece or carbon-ceramic rotors.
Features
• Sold as a left/right pair with complete floating hardware kit
• Direct replacements for Girodisc 380x34mm two-piece front rotors
• High-carbon iron alloy construction provides excellent thermal stability
• Directional curved vanes promote airflow and reduce heat buildup
• Maintains proper brake balance and ABS function when used in matched systems
• Precision-balanced for vibration-free braking
• Designed for track, competition, and performance street applications
Specifications
• Diameter: 380 mm
• Thickness: 34 mm
• Position: Front
• Material: High-carbon cast iron
• Mount type: Floating two-piece system
• Includes: Two rotor rings and complete hardware kit
• Sold/priced per pair
Girodisc D1-066 380x34mm Front Ring FAQs
Can these rotors fit OEM performance systems? No. These are designed for Girodisc two-piece aluminum hats and are not compatible with OEM or other aftermarket cast rotor assemblies.
What pad compounds are recommended? For dual-use street and track driving, Ferodo DS1.11 or Pagid RS29 pads are ideal. For endurance racing, Pagid RSL1 provide exceptional high-temperature stability.
Do these require a specific bedding procedure? Yes. Perform 8–10 medium stops from 60 mph, then allow the brakes to cool fully. This ensures proper pad transfer and optimal rotor surface conditioning.
What torque should I apply to the floating hardware? Tighten all bolts to 12 ft-lbs (16 Nm) using blue Loctite. Recheck torque after one full heat cycle to confirm secure float and alignment.
Keep your braking system race-ready with Girodisc D1-066 380x34mm front replacement rings — engineered for precision, endurance, and superior heat control on street or circuit.
