Herringbone tire kit, with rim
13" agricultural wheels (tire and rim, sold as a pair) with an aggressive chevron (herringbone) tread, optimized for muddy and uneven orchard ground - visible on every official FJD render of XBot. Fits both RM21 and XBot. FJD's own dealer sheet lists two part numbers for this kit, both labelled "Right" (31010014DY0100B and 31010058DY0100A) - most likely a left/right pair.