D1-031 Girodisc Porsche 340mm Front Replacement Rings
Restore your Porsche’s braking precision and performance with Girodisc D1-031 340mm front replacement rings. These high-performance rotors are direct replacements for Girodisc’s two-piece assemblies and mount to your existing aluminum hats using the included floating hardware kit. Each ring is crafted from Girodisc’s proprietary high-carbon cast iron, offering excellent thermal management, consistent pedal feel, and fade-free stopping power on both street and track.
Vehicle Fitment
Compatible with:
• Porsche 986 Boxster S (2000–2004)
• Porsche 987 Boxster S / Cayman S (2005–2012)
• Porsche Cayman R (2012)
Note: Designed exclusively for Girodisc 340mm two-piece front rotor systems. 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 340mm two-piece front rotors
• High-carbon iron alloy provides superior heat control and wear resistance
• Directional curved vanes increase airflow and cooling efficiency
• Maintains OEM brake bias, ABS, and traction control calibration
• Precision-balanced to eliminate vibration
• Designed exclusively for Girodisc aluminum hats
Specifications
• Diameter: 340 mm
• Position: Front
• Material: High-carbon cast iron
• Mount type: Floating two-piece system
• Includes: Two rotor rings and hardware kit
• Sold/priced per pair
Girodisc D1-031 Porsche 340mm Front Ring FAQs
Do these fit OEM Porsche rotor hats? No. The D1-031 rings are designed exclusively for Girodisc aluminum hats and are not compatible with OEM or aftermarket one-piece rotors.
What pad compounds pair best with these rotors? For street use, Ferodo DS2500 or Hawk HPS 5.0 pads offer smooth, quiet braking. For track applications, Pagid RS29 or Carbotech XP12 pads deliver optimal temperature control and bite.
Are these rotors directional? Yes. Each rotor is clearly labeled for left or right installation to ensure proper airflow through the internal curved vanes for maximum cooling efficiency.
How should the hardware be torqued? Torque each bolt to 12 ft-lbs (16 Nm) with blue Loctite. After one complete heat cycle, recheck all fasteners to confirm proper float and alignment.
Upgrade your Porsche’s braking performance with Girodisc D1-031 340mm front replacement rings — precision-built for thermal efficiency, control, and repeatable performance on road or track.
