A sample from the products for the Exhaust Muffler include: Packing Muffler (nas), Arrester Comp.,sp, Bolt,flg Dr 8x40, Band L.,exh.pipe.
This schematic depicts all components used in the Xr650r 2001 (1) European Direct Sales Exhaust Muffler partslist.
In this schematic the "Nut, Flange, 8mm" is used most often.