A brake system (20) includes a differential carrier (22, 121) and output gear (26) operatively connected. At least one carrier rotary friction surface (43) is operatively connected to the differential carrier (22, 121). At least one side gear rotary friction surface (45) is operatively connected to one of the side gears (31, 33). At least one limited rotary friction surface is operatively connected to the case, whereby during a braking operation the carrier rotary friction surface and the side gear rotary friction surface are pressed together causing braking of the differential carrier and the first and second differential side gears (31, 33). The carrier (22, 121) is supported by the first and second differential side gears (31, 33).