This SWORKz factory replacement rear hub is machined from aluminum for the S12-3 2WD buggy platform. The symmetrical right-equals-left design means a single part serves both sides of the vehicle, simplifying your spare parts inventory. It ships as one hub and includes an insert for the bearing or bushing fitment. This is a direct replacement for the original rear upright on the S12-3. Features: Machined aluminum construction Symmetrical R=L fitment, one part serves both sides Includes insert for bearing fitment Sold as one hub 7/7/26 cs