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World of Warcraft - Item Upgrading Upgrades to items allow players to increase an item's gear score up to 700 and also add a final 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 distinctive stats. (For example, a perfectly roll breakpoint armor is used in melee PvP). Other items such as weapons don't really change after an upgrade and therefore aren't worth the cost. Weapons Weapons can be upgraded to increase their numeric stats, such as damage to attack, crit chance Pv