GiroDisc A1-156 Front Iron PCCB Rotor Conversion - Porsche GT4, 991, 992 ROTORS Other designs use a small

Other designs use a small retainer ring to trap the bearing in a bore

they can fail due to a pressure drop

IMS Retrofit as a preventative maintenance:

13 IMS Pro Tool Kit

2 Cayman / Boxster vehicles (2009-2012)

GiroDisc A1-156 Front Iron PCCB Rotor Conversion - Porsche GT4, 991, 992 ROTORS Other designs use a smallPorsche GT4, 991, 992 PCCB Front Iron Rotor Conversion The Girodisc system is a direct replacement iron rotor for the OEM PCCB disc, no modifications are necessary. The disc will bolt directly to the car and work with OEM calipers and pads perfectly. The central hat section of our rotor is made from strictly U. S. sourced 6061 T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from