Part Number: GD1497. EBC 05-07 Porsche Cayenne 4.5 (380mm Rotors) GD Sport Rear Rotors GD1497. Rear GD Rotors 2008 PORSCHE Cayenne (1st Gen) 4.8 Turbo. EBC’s GD sport rotors features wide aperture slots for cooling to reduce temperatures preventing brake fade.