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World of Warcraft Upgrades and Item Upgrading Upgrades increase the value of certain numeric statistics on armor, weapons and rings. Upgrades also increase bonuses such as crit chance and PvE Damage. If the weapon's upgrade template is %, it will increase 3percent of its previous attack damage every time it's upgraded. The cost of upgrading an item is determined by the item's level. The cost increases as the item level rises. Components Upgrade components are items that can be inserted into armor, weapons and trinkets in ord