Front Bar vs Back Bar in ESO: The 10-Piece Set Math, Explained

Mechanics · 6 min · updated 2026-06-16

✓ Current as of Update 50 (2026)🎮 Works on console (no add-ons)

The frustration“What does 'back bar' mean, and how is running two 5-piece sets and a monster set even possible?”

Two pieces of ESO jargon stop new players cold: ‘back bar’ and the idea that you can wear ‘two 5-piece sets plus a monster set’ when you only have so many gear slots. Both come from the same mechanic — weapon bar-swapping — and once it clicks, build guides suddenly read in plain English.

You have two weapon bars

At level 15 you unlock a second weapon bar and can swap between them in combat (the swap-weapons key). Your ‘front bar’ is one weapon setup and five abilities; your ‘back bar’ is a second weapon and five more abilities. Most builds put their main damage/healing on the front bar and buffs, shields, or damage-over-time skills on the back bar, swapping between them.

Why the back bar weapon matters for sets

Here's the key: your two bars use two different weapons, and a weapon counts as a set piece. A two-handed weapon counts as 2 pieces; a one-hand+shield or dual-wield setup counts as 2 pieces across that bar. So your back-bar weapon(s) can carry a different set than your front-bar weapon(s). That's how people fit more sets than it looks like you should.

The 10-piece math

You have 12 gear slots total, but a typical 5+5+2 build uses them like this:

5 pieces of Set A — usually your body armor (head/chest/legs/hands/feet/waist), front-bar weapon, etc.
5 pieces of Set B — the rest of your armor and your back-bar weapon.
2 pieces of a Monster Set — the head (from a dungeon) and shoulder (from Undaunted), which is its own 1-or-2-piece set.
Result: two full 5-piece bonuses active at once, plus a monster set — because the back-bar weapon and jewelry let you split the pieces across two sets.

How it reads in a build guide

Now ‘Set A on body + front bar, Set B on jewelry + back bar, monster set head/shoulders’ means something concrete: it's telling you which physical slots each set goes in so all the bonuses are live at the same time. Our build generator lays this out for you with the slots labeled, so you can see exactly where each piece goes.

→ Build Generator → All sets

Back bar = your second weapon-and-abilities setup; you swap to it in combat. Because each bar's weapon counts toward a set, you can run two 5-piece sets plus a 2-piece monster set at once. Once you see the slot math, gear guides stop being cryptic. Current to Update 50 (June 2026).

Sources & further reading

All sets Generate a cited build How buffs & debuffs work