Explanation Of 2-Part Brake Disc

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The PCCB brake discs consist of two parts on the front and rear axles. The brake disc -1- is screwed to the brake disc hub -2- with 10 screws (M6) -3- .
Only the complete brake disc is available as a spare part (disc + brake disc hub)!
Do not separate the brake disc hub -2- and brake disc -1- .
Do not attempt to turn the screws -3- . The screws are prevented from turning by compression in the bush.
Changing the tightening torque of the screws -3- will have negative effects on the noise produced.

Fig 1: Identifying 2-Part Brake Disc
Courtesy of PORSCHE CARS NORTH AMERICA, INC.