Parts such as the Muffler: Grommet,2nd Muffler Cover, Bolt, Upper, Cover,muffler 1st, Washer(8.5x16x1.6) are included in the Tr50s 1999 (x) Muffler parts fiche.
With a quantity of two pieces, the Bolt Magneto S is the most used part in the MUFFLER diagram.