A wheel hub assembly including first and second bearing assemblies positioned on opposite sides of a spacer. The spacer includes at least one opening to allow lubricant to flow through the spacer. The spacer includes a first section deformable such that an overall length of the spacer is reduced a predetermined amount in response to the application of a predetermined load to set a distance between the first and second bearing assemblies. The assembly further includes a spindle having external threads and a nut having internal threads engaged with the spindle to secure the bearing assemblies and spacer within the wheel hub assembly.