An axle assembly comprising: a first shaft that is rotatable about a first axis; a second shaft that is rotatable about a second axis; a first set of gears that is rotatable about the first axis, wherein the first set of gears includes a first drive gear, a second drive gear, and a third drive gear; and a second set of gears that is rotatable about the second axis, wherein the second set of gears includes a first gear, a second gear, and a third gear that mesh with the first drive gear, the second drive gear, and the third drive gear, respectively, and each member of the second set of gears meshes with a different member of the first set of gears; a first shift collar that is rotatable about the first axis with the first shaft and moveable along the first axis with respect to the first shaft to selectively connect a member of the first set of gears to the first shaft; a second shift collar that is rotatable about the second axis with the second shaft and moveable along the second axis with respect to the second shaft to selectively connect a member of the second set of gears to the second shaft; and a sector cam that is rotatable about a sector cam axis and that is operatively connected to the first shift collar and to the second shift collar, wherein rotation of the sector cam about the sector cam axis controls movement of the first shift collar along the first axis and controls movement of the second shift collar along the second axis; wherein the first drive gear and the second drive gear are fixedly coupled to the first shaft, and the third drive gear is rotatably disposed on the first shaft such that that third drive gear is rotatable about the first axis with respect to the first shaft when the first shift collar does not connect the third drive gear to the first shaft and the third drive gear is rotatable with the first shaft when the first shift collar connects the third drive gear to the first shaft; wherein the third gear is fixedly coupled to the second shaft, and the first gear and the second gear are rotatably disposed on the second shaft and are selectively couplable to the second shaft with the second shift collar; and wherein the first shift collar couples the third drive gear to the first shaft such that the third drive gear is rotatable with the first shaft and the second shift collar does not couple the first gear or the second gear to the second shaft when the sector cam is in a low-speed position. a first shaft that is rotatable about a first axis; a second shaft that is rotatable about a second axis; a first set of gears that is rotatable about the first axis, wherein the first set of gears includes a first drive gear, a second drive gear, and a third drive gear; and a second set of gears that is rotatable about the second axis, wherein the second set of gears includes a first gear, a second gear, and a third gear that mesh with the first drive gear, the second drive gear, and the third drive gear, respectively, and each member of the second set of gears meshes with a different member of the first set of gears; a first shift collar that is rotatable about the first axis with the first shaft and moveable along the first axis with respect to the first shaft to selectively connect a member of the first set of gears to the first shaft; a second shift collar that is rotatable about the second axis with the second shaft and moveable along the second axis with respect to the second shaft to selectively connect a member of the second set of gears to the second shaft; and a sector cam that is rotatable about a sector cam axis and that is operatively connected to the first shift collar and to the second shift collar, wherein rotation of the sector cam about the sector cam axis controls movement of the first shift collar along the first axis and controls movement of the second shift collar along the second axis; wherein the first drive gear and the second drive gear are fixedly coupled to the first shaft, and the third drive gear is rotatably disposed on the first shaft such that that third drive gear is rotatable about the first axis with respect to the first shaft when the first shift collar does not connect the third drive gear to the first shaft and the third drive gear is rotatable with the first shaft when the first shift collar connects the third drive gear to the first shaft; wherein the third gear is fixedly coupled to the second shaft, and the first gear and the second gear are rotatably disposed on the second shaft and are selectively couplable to the second shaft with the second shift collar; and wherein the first shift collar couples the third drive gear to the first shaft such that the third drive gear is rotatable with the first shaft and the second shift collar does not couple the first gear or the second gear to the second shaft when the sector cam is in a low-speed position.