Porsche #991 #GT3 #Cup gearbox #reduction of the #gear #ratioto: 4. Gear - 19:305. Gear - 23:316. Gear - 25:29 Porsche 991 GT3 Cup short ratio Bild 1 von 7 Porsche 991 GT3 Cup short ratio Bild 2 von 7 Porsche 991 GT3 Cup short ratio Bild 3 von 7 Porsche 991 GT3 Cup short ratio Bild 4 von 7 Porsche 991 GT3 Cup short ratio Bild 5 von 7 Porsche 991 GT3 Cup short ratio Bild 6 von 7 Porsche 991 GT3 Cup short ratio Bild 7 von 7 Porsche 991 GT3 Cup short ratio #Transmission completely #dismantled, #shorter #gears #mounted #Gearbox installed, #test drive follows in #ZolderOur offer of shorter gear wheels with assembly in the shop.