Girodisc Porsche 981, 718 Rear Rings
Refresh your Porsche’s braking performance with Girodisc D2-035 350mm rear replacement rings. These precision-machined, high-carbon cast iron rings bolt directly to your existing Girodisc aluminum hats using the included floating hardware kit. Replace only the wear surface to restore full braking performance while retaining your lightweight Girodisc two-piece system.
Vehicle Fitment
Compatible with:
• Porsche 981 Cayman / Boxster (rear)
• Porsche 718 Cayman / Boxster (rear)
Note: For Girodisc 350mm two-piece rear rotor systems only. Designed to mate with original Girodisc aluminum hats — not compatible with factory two-piece rotor hats or PCCB systems.
Features
• Sold as a left/right pair with new floating hardware kit
• CNC-machined from high-carbon cast iron for heat capacity and strength
• Curved directional vanes maximize cooling and reduce fade
• Bolt-on fitment to Girodisc aluminum hats — no modifications required
• Balanced and heat-treated for consistent braking feel
• Manufactured in Bellingham, WA, USA
Specifications
• Diameter: 350mm
• Position: Rear
• Material: High-carbon cast iron
• Mount type: Floating two-piece system
• Includes: Two rings and hardware kit
• Sold/priced per pair
• MSRP: $780.00
Girodisc D2-035 Porsche 981 / 718 Rear Replacement Ring FAQs
Can these be installed with the OEM Porsche hats? No. These are designed exclusively for Girodisc aluminum hats and are not compatible with factory two-piece rotor assemblies.
Will these fit PCCB or steel brake systems? Only the Girodisc steel two-piece rotor system — they are not designed for Porsche Ceramic Composite Brakes (PCCB).
Are they suitable for track use? Yes. The high-carbon alloy and floating design resist cracking and warping under repeated high-temperature braking on track.
How do I know when to replace the rings? Replace them when the rotor surface reaches minimum thickness or shows visible heat checking, per Girodisc wear specifications.
Restore confidence in your Porsche 981 or 718 Cayman and Boxster with Girodisc D2-035 350mm rear replacement rings — the perfect blend of precision, performance, and cost-effective service life.
