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World of Warcraft Item Upgrades Item upgrades are items that can be slotted into trinkets, weapons and armor for a stat boost. They are available through missions, vendors and on the Trading Post. Upgrading gear is one of the main ways to increase your character's or ship's performance in battle. Gear that is upgraded increases in Mark Level and rarity. Upgrade components Upgrade components are items that can be slotted into weapons, armor trinkets and gathering tools to offer additional bonuses. These bonuses range from stat increases to additional