A track system configured for use with a storage rack assembly is provided. The track system comprises first and second forward wheel assemblies, first and second rearward wheel assemblies and a forward axle assembly. The forward axle assembly is coupled between the first and second forward wheel assemblies in an operating position. The forward axle assembly comprises a first intermediate member, a first forward axle member and a second forward axle member. The first forward axle member has a first end coupled to the first forward wheel assembly and a second end slidably coupled to the first intermediate member. The second forward axle member has a first end coupled to the second forward wheel assembly and a second end slidably coupled to the first intermediate member. The first intermediate member inhibits rotation of the first and second forward axle members along their respective axes.