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World of Warcraft - Item Upgrading The upgrade option allows players to boost an item's gear rating up to 700 points and add a bonus. Items can be upgraded if they are in your inventory and you take them to the kiln. Certain items can be upgraded to benefit from their unique stats (like perfect broken point armour that is rolled for melee PvP) while others like weapons do not vary greatly post upgrade, so they aren't worth upgrading. Weapons Weapons can be upgraded to increase their numeric stats like the chance