Abstract: The present invention provides a brush holder assembly for holding carbon brushes against the commutator of a DC motor. The brush holder assembly may include elongated brush receptacles that can accommodate longer carbon brushes, and a double fulcrum design that assists in holding the brushes against the commutator with constant force, or a nearly constant force. In a particular embodiment, the brush holder assembly may be mounted within the motor housing of an off-highway vehicle with a motorized wheel, a locomotive, or an oil rig. For these kinds of applications, the space between the motor housing and the commutator may be particularly narrow and confined, and the double fulcrum design makes it possible to employ brushes with greater lengths of useful carbon and to manually replace them with minimal down time.