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World of Warcraft - Item Upgrading Item upgrading allows players to boost an item's gear score up to 700 and add an additional perk. Items can be upgraded if they are in your inventory and you bring them to the Kiln. Certain items are worth upgrading because of their unique stats. (For example, a perfectly broken point armor that is rolled can be used in melee PvP). Other items such as weapons aren't changed much after an upgrade and therefore aren't worth the cost. Weapons Upgrades to weapons can boost their numerical stats, such as attack damage, crit chance an