On this parts fiche the Bolt,flange,6x10 is the most specified component.
The lowest price component in this Exhaust Muffler parts-list fiche is the Washer,plain, 6mm.
Parts such as the Exhaust Muffler: Bolt,flange,dr,8x, Packing,muffler (nas), Gasket,ex.pipe (nas), Chamber Comp.exh are included in the Xl650v Transalp 2002 (2) European Direct Sales 25k Exhaust Muffler parts fiche.