Power train F 650 CS Clutch Multiplate clutch in oil bath Primary transmission ratio 37/72 = 1:1.946 Gearbox 5-speed gearbox with dog-clutch engagement mechanism, inte- grated into engine block Gear ratios 1st gear = 2.75 2nd gear = 1.75 3rd gear = 1.31 4th gear = 1.05 .