Restore axle support with a rear axle shaft ball bearing kit in the 40 x 90 x 23 x 28 mm format. This assembly is specified for carriers that require a 40 mm inner diameter and 90 mm outer diameter bearing geometry, with a matched stack height and included components suited to rear axle service. The kit format streamlines sourcing for one side of the axle and aligns with common cross-references used in catalogs for this application. Verify housing and shaft dimensions, carrier design, and spacer requirements before installation to ensure correct seating and alignment in the axle assembly.