4 Chassis and suspension 911 GT2 · Along with the introduction of the PCCB (Porsche Ceramic Composite Brake), a number of mo

911 Chassis and suspension 4 4 Chassis and suspension 911 GT2 General Along with the introduction of the PCCB (Porsche Ceramic Composite Brake), a number of modi- fications have been carried out, which are listed below. 4616 Air ducts, front brake discs 4616 Air duct, rear brake disc For optimal cooling of the PCCB brake discs For optimal cooling of the PCCB brake discs on the front axle, the wishbones have larger on the rear axle, air ducts are fitted to the air ducts than on the grey cast iron brake lower wishbones. disc. Note Note When converting from grey cast iron brake discs to PCCB brake discs, the air ductsWhen converting from grey cast iron brake must be fitted.discs to PCCB brake discs, the air ducts must be fitted. The distance between the air ducts and the road is approx. 50 mm. Before driving onto test stations (e.g. brake test station) or driv- ing onto lifting platforms, depending on the design, measures may need to be taken to prevent damaging or severing of the air ducts. 4_08_02 4_09_01 2002 Service Information 4 - 7