With six applications this Washer,10mm is the most specified part.
The most reasonably priced component used on the Trx300ex Fourtrax 1999 (x) Usa Cylinder Head is the Washer Seal, 6mm.
Parts such as the Cylinder Head: Screw,pan,5x20, Cover,tappet Adj, Plug(x27esr-u Nd), Bolt,flange,sh,6x25 are included in the Trx300ex Fourtrax 1999 (x) Usa Cylinder Head parts fiche.