A device for axially displacing a shaft in a vehicle transmission is provided, in particular a vehicle transmission of a commercial vehicle. In the device, forces are exerted on the shaft of the vehicle transmission in an axial direction via a fork. The device includes a piston, which is movable in the axial direction, in a piston housing. The piston is mounted on an inner guide, wherein an end of the inner guide projects out of the piston housing on one side and, there, is connected to an fixed with respect to a housing of the vehicle transmission.