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World of Warcraft - Item Upgrading The item upgrade allows players to boost an item's gear rating up to 700 points and add a final bonus. Items can be upgraded if they are in your inventory and you bring them to the kiln. Certain items can be upgraded for their unique stats (like perfect made breakpoint armour that can be rolled to use in melee PvP) while other items, such as weapons do not change significantly after an upgrade and thus aren't worth upgrading. Weapons Weapons can be upgraded to boost