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World of Warcraft Item Upgrades Items that can be added to weapons, trinkets, and armor in order to increase their effectiveness are known as upgrade items. They can be found through missions, vendors and on the Trading Post. Upgrades to gear can increase the effectiveness of your character or ship in battle. Gear that is upgraded increases in Mark Level and rarity. Upgrade components Upgrade components are things that can be added to weapons, armors trinkets, tools for gathering and