Parts such as the Cylinder/cylinder Head: Thermo Unit Assy, Bolt,stud 2,8x25, Cylinder Comp.a, Cylinder Comp.b are included in the Nsr125r 1997 (v) England Cylinder/cylinder Head parts fiche.
The Nut,flange,8mm is the cheapest item from this partsfiche.
On this parts fiche the Nut,flange,7mm is the most specified component.