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Item Upgrading and Rerolling in World of Warcraft Upgrades can be added to items to increase their effectiveness. Gear upgrades are crucial particularly early on. Start by upgrading BiS (Best-in-Slot) items before working on other pieces of equipment that fit your build. Upgrade Tokens can be used on the item's upgrade window to upgrade it. The available upgrade slots vary by item type. Upgrade components Upgrade components are unique items that can be added to weapons, armors, trinkets, and gathering tools. Each upgrade com