These are direct replacement rings for the Porsche 991 GT3 Cup and all GT4 Clubsport factory race cars, for use with the Porsche/PFC factory hats and snap ring hardware.

With a higher 72-vane count, these rings offer a durability and longevity upgrade over the original 48-vane rings. Manufactured with the same tooth-drive configuration as the factory hats, these will plug-and-play with your existing hats without requiring the purchase of additional hardware.

Sold per pair. Hardware not included.

Diameter: 380mm
Thickness: 32mm
Minimum thickness: 30mm

Note: if you have GiroDisc hats, these are not the correct replacement rings. You will need Giro Disc part number D1-238.