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Borderlands 4 Guide

How to Unlock the Legendary Configuration Siren Class Mod

Legendary Loot
Class Mods
Updated on Apr 7, 2026
Apr 7, 2026

Overview

Configuration is a Siren Class Mod for the Vault Hunter Vex that drops from Nightmare Rifts in the Mad Ellie and the Vault of the Damned DLC (Story Pack 1)

When Vex activates an Action Skill or Command Skill open a Blood Rift for a duration. Maximum of 2 active Blood Rifts at a time.

Blood Rifts rapidly fire Remnant Minions, dealing Kinetic Gun Damage based on her Current Weapon when spawned.

Check out all the Legendary Vex Class Mods here!

borderlands 4 configuration siren class mod

How to Unlock

Unlock Location:

  • Progress through the "Mad Ellie Vault of the Damned" DLC until reaching the Monsters in the lake after following the NPC "Pickel" Defeat any "Nightmare Rift Boss" The one on the map is "Ice Maw"

Farm Method:

  • Clear the lake & Defeat Ice Maw.
  • Look out for "Nightmare Rift Bosses" defeat them for a chance at Configuration to drop.

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