Porsche 992 GT3 Cup Rear Replacement Rings
Keep your Porsche 992 GT3 Cup performing at its peak with the Girodisc D2-287 Rear Replacement Rings. Designed for serious racers and track-day purists, these high-performance 380x34mm iron rings are direct replacements for Girodisc’s two-piece rear rotors, offering the same exceptional strength, cooling, and balance demanded by professional motorsport.
Each ring is machined from Girodisc’s proprietary high-carbon cast iron alloy, poured and finished entirely in the USA. With 48 curved directional vanes and a floating two-piece design, these replacement rings deliver consistent braking performance, improved heat management, and reduced unsprung weight—essential for precision braking on the track.
Features and Benefits
- Direct replacement rings for Girodisc 992 GT3 Cup rear two-piece rotors
- Machined from proprietary U.S.-poured high-carbon cast iron for superior heat control
- 48 curved directional vanes maximize airflow and cooling efficiency
- Lightweight two-piece design minimizes unsprung mass for improved chassis response
- Includes new hardware: drive pins, bolts, and washers
- Fully machined, balanced, and assembled in the USA
Vehicle Fitment
- 2022+ Porsche 911 GT3 Cup (992)
These rings are designed exclusively for Girodisc aluminum hats and are not compatible with OEM or other aftermarket hat systems. They are a direct replacement for Girodisc rear assemblies used in competition or iron conversion setups.
Why Choose Girodisc
Girodisc is the benchmark in motorsport braking systems. Built for the extreme thermal loads of track racing, every rotor is precision-balanced and engineered to maintain consistent pad contact, cooling efficiency, and braking stability. The D2-287 replacement rings bring your Girodisc system back to new, ensuring your GT3 Cup continues braking as hard as it accelerates.
FAQs
Do these include the aluminum hats?
No. The D2-287 kit includes only the rotor rings and new hardware. Your existing Girodisc hats are reused.
Can these be used with factory Porsche rotors?
No. Girodisc replacement rings are designed specifically for Girodisc two-piece rotors and will not fit OEM or other aftermarket systems.
Are these rotors directional?
Yes. Each rotor ring features curved internal vanes and must be installed on the correct side for proper airflow and cooling.
What’s included?
A pair of rear rotor rings (left and right) and a full hardware kit with drive pins, bolts, and washers.
Ready to Refresh?
Restore your Porsche 992 GT3 Cup’s braking system to peak performance with the Girodisc D2-287 Rear Replacement Rings. Designed for race conditions and precision driving, these rings deliver the strength, balance, and cooling efficiency your car deserves. Order your set today from Competition Motorsport and get back to dominating every corner and braking zone.
