The sub assemblies and components that make up this Front Fork(kayaba)(gp125c F.no.101265~,gp125uc F.no.101623~ include this Outer Tube, Lh, the most expensive part.
This schematic depicts all components used in the Gp125 1978 (c) (e01 E02 E04 E06 E13 E17 E18 E21 E22 E24 E30) Front Fork(kayaba)(gp125c F.no.101265~,gp125uc F.no.101623~ partslist.