A liquid-cooled brake disc comprising: a substantially circular front face surface configured to brake an adjacent rotating member; a substantially circular back face surface; an outer perimeter wall extending from the front face surface to the back face surface; and at least four inner chambers (235, 255, 275, 290), including: a first inner chamber defining a first cooling liquid pathway from a first cooling liquid inlet disposed in the outer perimeter wall to a first cooling liquid outlet disposed in the outer perimeter wall, a second inner chamber defining a second cooling liquid pathway from a second cooling liquid inlet disposed in the outer perimeter wall to a second cooling liquid outlet disposed in the outer perimeter wall, a third inner chamber defining a third cooling liquid pathway from a third cooling liquid inlet disposed in the outer perimeter wall to a third cooling liquid outlet disposed in the outer perimeter wall, and a fourth inner chamber defining a fourth cooling liquid pathway from a fourth cooling liquid inlet disposed in the outer perimeter wall to a fourth cooling liquid outlet disposed in the outer perimeter wall, wherein each of the inner chambers (235, 255, 275, 290) has a plurality of ribs ((250, 270, 296) disposed therein, and wherein each of the inner chambers (235, 255, 275, 290) is separated from adjacent inner chambers by a divider. a substantially circular front face surface configured to brake an adjacent rotating member; a substantially circular back face surface; an outer perimeter wall extending from the front face surface to the back face surface; and at least four inner chambers (235, 255, 275, 290), including: a first inner chamber defining a first cooling liquid pathway from a first cooling liquid inlet disposed in the outer perimeter wall to a first cooling liquid outlet disposed in the outer perimeter wall, a second inner chamber defining a second cooling liquid pathway from a second cooling liquid inlet disposed in the outer perimeter wall to a second cooling liquid outlet disposed in the outer perimeter wall, a third inner chamber defining a third cooling liquid pathway from a third cooling liquid inlet disposed in the outer perimeter wall to a third cooling liquid outlet disposed in the outer perimeter wall, and a fourth inner chamber defining a fourth cooling liquid pathway from a fourth cooling liquid inlet disposed in the outer perimeter wall to a fourth cooling liquid outlet disposed in the outer perimeter wall, a first inner chamber defining a first cooling liquid pathway from a first cooling liquid inlet disposed in the outer perimeter wall to a first cooling liquid outlet disposed in the outer perimeter wall, a second inner chamber defining a second cooling liquid pathway from a second cooling liquid inlet disposed in the outer perimeter wall to a second cooling liquid outlet disposed in the outer perimeter wall, a third inner chamber defining a third cooling liquid pathway from a third cooling liquid inlet disposed in the outer perimeter wall to a third cooling liquid outlet disposed in the outer perimeter wall, and a fourth inner chamber defining a fourth cooling liquid pathway from a fourth cooling liquid inlet disposed in the outer perimeter wall to a fourth cooling liquid outlet disposed in the outer perimeter wall, wherein each of the inner chambers (235, 255, 275, 290) has a plurality of ribs ((250, 270, 296) disposed therein, and wherein each of the inner chambers (235, 255, 275, 290) is separated from adjacent inner chambers by a divider.