On this parts fiche the Mirror Assy,rh is the most specified component.
The most reasonably priced component used on the Gs450e 1984 (e) South Africa Belgium (e06 E21) Handlebar (model J) is the Nut.
Parts such as the Handlebar (model J): Cable Assy,sta, Handlebar, Cushion,rear View Mirror, Mirror Assembly,rear View are included in the Gs450e 1984 (e) South Africa Belgium (e06 E21) Handlebar (model J) parts fiche.