
The Furnace is a powerful Class Mod for Amon in Borderlands 4. What makes it special is that it changes all of Amon’s abilities to deal fire damage. While this might not be ideal against all enemies, it’s incredibly effective against those vulnerable to fire, letting you defeat them quickly. If you’re interested in building a fire-focused Amon, keep reading to learn where to find this mod.
How to Get the Furnace Legendary Amon Class Mod | Borderlands 4

You can get the Furnace Legendary Class Mod for Amon by defeating Idolator Sol, the boss at the end of Fortress Indomita in the Fadefields area (Idolator’s Noose). The map shows the location of Fortress Indomita. To farm this boss, you must first finish the main story mission called “Rush the Gate.”

Okay, so basically, to get the Furnace mod, you just have to keep fighting Idolator Sol. It’s a grind, yeah, but thankfully, you can easily reset the fight! There’s a machine called Moxxi’s Big Encore right near where you enter the arena, and for a little bit of money, it’ll let you fight him again and again until he *finally* drops it. It’s a lifesaver, honestly!

Keep in mind that Idolator Sol doesn’t just drop one Legendary item! He has a chance to drop several other powerful items, including Class Mods like Rafa’s Dancer.
Besides being specifically dropped from one source, this item can also appear randomly from other places. However, there’s no way to know when that might happen. If you really need this item, your best bet is to consistently farm Idolator Sol.
The Class Mod has a special ability: it changes damage from abilities like Fellfrost, Hoarcleave, Fulminating Fist, and Stormcutter into Incendiary Damage. If you’re building an Amon character focused on Incendiary damage, this mod is the most effective choice!
And that’s how you can farm the Furnace Legendary Class Mod for Amon in Borderlands 4. Like most things in Borderlands, getting it will depend a lot on luck, so we hope you have good fortune!
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2025-09-17 03:06