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World of Warcraft - Item Upgrading The item upgrade lets players boost the gear rating of an item up 700 points, and then add a bonus. Items can be upgraded if they're in your inventory and you take them to the Kiln. Certain items are worth upgrading due to their unique stats. (For example the perfect roll breakpoint armor is used in melee PvP). Other items, like weapons don't change much after an upgrade and therefore aren't worth the cost. Weapons Upgrades to weapons can improve their numerical