yes.
there are commands to change main sensitivity (vertical and horizontal), and command to change sensitivities when you are inside some types of vehicles.
main sensitivities and default values:
m_pitch 0.022
m_yaw 0.022
for vehicles:
m_bumblebeePitchScale 1
m_bumblebeeYawScale 1
m_heavyVehiclePitchScale 1
m_heavyVehicleYawScale 1
m_helicopterPitchScale 1
m_helicopterYawScale 1
m_lightVehiclePitchScale 1
m_lightVehicleYawScale 1
m_playerPitchScale 1
m_playerYawScale 1
if you look at previous posts from this thread, you will see i posted a piece of my config where i keep sensitivy at 5 and only change these specific values. the reason for it is this: a few days ago my monitor (21") died and i had to use my older one (19"). now i cant play at 1600x1200 like before, and had to change to 1280x1024. all sensitivities changed because of this. but only one command made it look like before:
seta sensitivity 4
other way i would have to change all individual sensitivities in the cfg file.