Parts such as the Rear Crankcase Cover: Bolt,flange,nshf,, Dowel,pin,8x14, Bolt,flange,nshf,, Cover Comp,rear are included in the Trx680fa 2010 (a) Australia Rear Crankcase Cover parts fiche.
Of all the components used in this assembly the Cover Comp,rear is the most expensive.
The most reasonably priced component used on the Trx680fa 2010 (a) Australia Rear Crankcase Cover is the Washer,plug,drain 12.