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World of Warcraft Item Upgrades Items that can be added to weapons, trinkets, and armor in order to increase their performance are referred to as item upgrades. They can be found in shops, missions and on the Trading Post. Upgrading gear is one of the most effective ways to increase your ship/characters effectiveness in battle. The gear you upgrade increases Mark Level and rarity. Upgrade components Upgrade components are items which can be added to weapons, armors trinkets, gathering tools and other items in order to re