The Muffler is made up of components including this Body,muffler which is the most expensive.
Parts such as the Muffler: Bolt 10x25, Gasket,exhaust Pipe (nas), Body,muffler, Bolt are included in the Gs400 1978 (c) Usa (e03) Muffler parts fiche.
The component with the lowest price in the MUFFLER schematic is the Lock Washer.