D1-159 Girodisc McLaren 394mm Front Replacement Rings
Renew your McLaren’s braking performance with Girodisc D1-159 394mm front replacement rings. These precision-engineered components bolt directly to your existing Girodisc aluminum hats using the supplied floating hardware kit. Each ring is machined from Girodisc’s proprietary high-carbon cast iron for superior thermal control, balanced response, and fade-free braking under extreme track conditions.
Vehicle Fitment
Compatible with:
• McLaren 540C / 570S / 570GT / 600LT (Front)
• McLaren 650S / 675LT (Front)
• McLaren MP4-12C (Front)
Note: Designed for Girodisc 394mm two-piece front rotor systems. Not compatible with OEM carbon-ceramic rotors or one-piece iron discs.
Features
• Sold as a left/right pair with complete floating hardware kit
• Direct replacements for Girodisc 394mm two-piece front rotors
• CNC-machined from high-carbon cast iron for durability and high-temperature stability
• Directional curved vanes accelerate airflow for maximum cooling efficiency
• Maintains factory brake bias, ABS, and stability control calibration
• Precision-balanced for smooth, vibration-free operation
• Designed exclusively for Girodisc aluminum hats used in McLaren iron-conversion systems
Specifications
• Diameter: 394 mm
• Position: Front
• Material: High-carbon cast iron
• Mount type: Floating two-piece system
• Includes: Two rotor rings and new hardware kit
• Sold/priced per pair
Girodisc D1-159 McLaren 394mm Front Replacement Ring FAQs
Can I use these with McLaren’s OEM carbon-ceramic rotors? No. These are for Girodisc steel rotor conversions only and will not fit OEM ceramic brake hardware.
What pad compounds are best suited for these rotors? For street/track mix, Pagid RS29 or Ferodo DS2500 pads are excellent. For full track duty, Pagid RSL1 or Endless ME20 are ideal high-temp options.
Are these rotors directional? Yes. Each rotor is marked for left and right orientation to ensure the curved vanes channel airflow correctly through the disc for optimal cooling.
What’s the service life of these rotors under track use? Typically 20–30 hours of hard circuit time depending on track layout, pad compound, and cooling efficiency. Street-driven cars often exceed 40,000 miles.
Upgrade your McLaren’s braking precision with Girodisc D1-159 394mm front replacement rings — race-bred components engineered for stability, cooling, and performance at any speed.
