To discover exactly which parts you require use the on-line schematic exploded diagram - it will even give you some idea of where and how to fit those new parts.
YZ85LW 2004 5SH9 JAPAN 1C5PA-100E1 section with thirty-eight Other schematic pages.
The Yamaha YZ85LW 2004 5SH9 JAPAN 1C5PA-100E1 parts lists consist of thirty-eight schematics.