Do Class Mods Add Augment Slots in Borderlands 4? (Gear Slot Audit)
A common Borderlands 4 question: can I get more augment or capstone slots from gear? The short answer is no. This was verified in-game — here’s the full audit. For the underlying rules, see the skill tree unlock mechanics.
The default loadout
Every Vault Hunter runs 1 Augment + 1 Capstone, tied to the action skill of whichever color tree it’s from. That’s the baseline everything below is measured against.
Class mods
Class mods do not add augment slots, capstone slots, or a second action skill. What they actually do:
- Grant bonus skill points to specific skills
- Boost stats
- Amplify existing abilities
Crucially, class mod bonus skill points do not count toward tier unlocks. They can raise a skill (even past its normal max — an overcap), but only the points you actually spent open the Common-15 / sub-branch-10 thresholds. So a class mod can’t shortcut you into a slot-adding passive you haven’t invested in.
Enhancements
Enhancements sit in their own gear slot (the artifact-style slot). They don’t interact with augment slots at all.
What about “Legendary Augments”?
That phrase comes from build planners (like Maxroll) and refers to rolling legendary weapons/gear — it has nothing to do with action-skill augment slots. Don’t confuse the two.
The only things that change slots
Slot changes come only from the skill tree:
| Vault Hunter | Slots |
|---|---|
| C4SH | No capstones. Devil’s Tines passive (1 pt) per tree → up to 4 augments (details) |
| Vex | Dark Pact (a capstone, no point cost) grants +1 augment → 2 augments |
| Amon / Harlowe / Rafa | Locked to 1 + 1 (their capstones only transform the action skill or add damage) |
Summary
Gear does not add slots. Class mods, enhancements, and bonus skill points can’t grant extra augment or capstone slots, and bonus points don’t even count toward tier unlocks. If you want more slots, the answer is always the skill tree — Vex’s Dark Pact or C4SH’s Devil’s Tines.
All numbers verified in-game (as of 2026-07). Values may change with patches.
FAQ
Do class mods give extra augment slots in Borderlands 4?
No. Class mods grant bonus skill points, stat boosts, and skill amplifications, but they do not add augment or capstone slots. Only the skill tree changes slots.
Do class mod bonus skill points help unlock tiers?
No. Bonus skill points can raise (and overcap) individual skills, but only the points you actually spent count toward tier unlocks. Bonus points can't open the next tier or hand you a slot.
Which Vault Hunters can change their slot loadout?
Only two. Vex's Dark Pact capstone grants +1 augment (2 augments), and C4SH's Devil's Tines passive adds +1 per color tree (up to 4 augments). Amon, Harlowe, and Rafa are locked to 1 augment + 1 capstone.