This Stem,strn.*nh-1* is the most expensive of the items that make up this Steering Handle - Top Bridge - Stem assembly.
The thirty Cb550f1 Super Sport 550 Four 1976 European Direct Sales Steering Handle - Top Bridge - Stem component parts are all listed in this schematic.
Parts such as the Steering Handle - Top Bridge - Stem: Thread,head Top, Washer,8mm, Washer 10mm, Race are included in the Cb550f1 Super Sport 550 Four 1976 European Direct Sales Steering Handle - Top Bridge - Stem parts fiche.