Parts such as the Muffler(s): Damper,muffler, Baffle-pipe Muffler, Body-comp-muffler, Bolt-wp are included in the Kdx80-c4 1987 Usa Canada Muffler(s) parts fiche.
The most reasonably priced component used on the Kdx80-c4 1987 Usa Canada Muffler(s) is the Bolt,flanged,6x25.
With three applications this Nut,6m/m is the most specified part.