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Path of Exile Item Upgrading Upgrades to items allow players to upgrade their weapons and gear by adding new affixes, boosting the base stats of the item or giving additional benefits. To upgrade an item, the player has to have it in their inventory as well as access to the kiln. Items with weak bases, like rings, can be upgraded into stronger bases. Items with strong bases, like the Titans of eth have little change in their stats. Upgrade components Upgrade components can be slotted into trinkets, armor, weapons and tool