A dual-mass flywheel for a drive train of a motor vehicle having a primary flywheel mass and a secondary flywheel mass which are coupled to one another in a rotationally elastic manner via at least one spring device. At least one gear device is disposed between the spring device and at least one of the two flywheel masses. The gear device causing a deflection movement of the spring device relative to a rotational movement of the two flywheel masses in relation to one another, wherein a characteristic curve of the spring device may be modified by the gear device.