The most reasonably priced component used on the Gs500e 1999 (x) (e02 E04 E22 E24 E25 E34 E37) Muffler is the Washer (8.5x29x1.6).
With four applications this Bolt is the most specified part.
Some items from this specific schematic: Bolt(8x40), Muffler, Bolt, Cushion.