An agricultural harvester includes a chassis, an axle assembly carrying the chassis, a plurality of hub assemblies including a first hub assembly and a second hub assembly, the hub assemblies coupled to a corresponding end of the axle assembly, and a plurality of ground engaging devices each being coupled to a corresponding hub assemblies. The ground engaging devices support the axle assembly and the chassis. The axle assembly includes an extendable/retractable axle for altering a distance between the ground engaging devices that are coupled to the hub assemblies, and a connecting rod extending/retracting from a central portion of the axle assembly, the connecting rod also coupled to a portion of the first hub assembly. The connecting rod is generally vertically displaced from the extendable/retractable axle.