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World of Warcraft - Item Upgrading The upgrade of an item lets players increase the gear rating of an item by up to 700 points and give it a bonus. Items can be upgraded if they are in your inventory and you decide to take them to the kiln. Certain items are worth upgrading due to their distinctive stats. (For example an excellently roll breakpoint armor is ed in melee PvP). Other items like weapons don't really change after an upgrade and therefore aren't worth the effort. Weapons Weapons can be upgraded to