The Yamaha EXHAUST has seven products enlisted in the schematic.
This Muffler Assy 1 is the most expensive of the items that make up this Exhaust assembly.
Some items from this specific schematic: Muffler Assy 1, Gasket, Exhaust Pipe (nas), Bolt, Flange(j38), Ybs67-8 Washer, Spring.
