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World of Warcraft Item Upgrades Item upgrades are items that can be put into trinkets, weapons and armor to give an increase in stats. They can be found through missions, vendors and also on the Trading Post. Upgrades to gear can increase the effectiveness of your ship/character in battle. Upgrading equipment increases its Mark Level and Rarity. Upgrade components Upgrade components are items that can be put into weapons, armor trinkets, trinkets, or gathering tools to provide additional bonuses.