Home >> Porsche >> 2011 >> 911 Speedster >> Repair and Diagnosis >> Drivelines & Axles >> Driveshaft & Universal Joints >> 39 - Final Drive - Differential, Differential Lock -- CARRERA (997) >> WM 3988TW Technical Data On Front Final Drive (CARR. 4 Coupe, Turbo Coupe, CARR. 4S Coupe, TARGA 4, TARGA 4S, CARR. 4 CABRIO, CARR. 4S CABRIO & Turbo CABRIO) >> Technical Values >> Transmission Ratio