This Primary Driven Gear Comp. is the most expensive of the items that make up this Clutch assembly.
The twenty-five Wr400f 1999 5gs2 Italy 295gs-100e2c Clutch component parts are all listed in this schematic.
Some items from this specific schematic: Oil Seal (4g0), Rod, Push 2, Gear, Primary Drive, Bearing, Thrust (713).