ZZZ Drive Disc Stats — Main Stats per Slot & Substats | Zenless Zone Zero

A Drive Disc is ZZZ's stat gear, the equivalent of artifacts/relics in other HoYo games. Each agent wears 6 discs in six slots numbered I to VI. Every disc gives 1 main stat (the big primary stat) and up to 4 substats (smaller secondary stats).

Discs come in sets: equipping 2 of the same set unlocks a 2-piece effect, 4 unlocks a 4-piece effect. This page is about stats only; the key rule to remember is that slots 1-2-3 have locked main stats, while slots 4-5-6 are the ones you get to choose.

This is the most important zzz drive disc stats table. Slots I-II-III always roll one fixed stat you cannot change:

Because slots IV-V-VI are random, you farm until the right main stat drops, then level it. Don't waste upgrade mats on the wrong main stat.

Main stats grow as you level the disc; an S-rank (highest rarity) disc caps at level 15. Sourced cap values (S-rank):

• CRIT Rate: up to 24%
• CRIT DMG: up to 48%
• ATK% / HP%: up to 30%
• DEF%: up to 48%
• PEN Ratio: up to 24%
• elemental DMG Bonus (Fire/Ice/Electric/Physical/Ether): up to 30%

This is why a CRIT main stat in slot IV is so strong: a maxed CRIT DMG disc hands you 48% crit damage from the main stat alone. The three remaining mains are role-specific — pick them by role, not by raw size: Anomaly Proficiency (slot IV, flat value, for Anomaly agents), Impact (slot VI, for Stun agents) and Energy Regen (slot VI, for supports).

Drive disc substats are the secondary lines, up to 4 per disc. Possible substats are: flat HP, flat ATK, flat DEF, HP%, ATK%, DEF%, CRIT Rate, CRIT DMG, Anomaly Proficiency, and PEN (flat value). Rule: a disc's main stat can't also appear as one of its substats (e.g. an ATK% main won't roll ATK% as a sub).

Verified per-roll values on S-rank discs:

• CRIT Rate: ~2.4% per roll (up to ~14.4% with 6 rolls)
• CRIT DMG: ~4.8% per roll (up to ~28.8%)
• ATK%: ~3% per roll (up to ~18%)
• Anomaly Proficiency: 9 per roll (up to ~54)

An S-rank disc starts with 3 or 4 substats. Every 3 levels (levels 3, 6, 9, 12, 15) it enhances once:

• If it has fewer than 4 substats → it gains a new random substat.
• If it already has 4 substats → one existing substat gets an extra random roll.

Since a disc enhances 5 times total, one lucky substat can receive up to 6 rolls (1 base + 5 added) — that's the origin of the "6× base value" cap. Discs that start with 4 substats are preferred because every enhancement upgrades a substat instead of unlocking a new one.

Since patch 2.5, ZZZ added the Substat Tuner — the first time you can actively shape substats instead of leaving it to luck. Using Tuning Calibrator items, each disc can have up to 2 substats tuned: 1 Calibrator upgrades one line, 2 Calibrators upgrade two. Existing substats are KEPT; only the line you pick gains an extra roll.

It unlocks in the endgame (once you reach the required Inter-Knot level) and is accessed from the Drive Disc management menu. Tuning Calibrators come from co-op activities and dungeons and are NOT buyable with Polychrome, so supply is limited — save them for your best discs. For 2026 players this is the final optimization step: farm a disc that already has two CRIT lines, then use the Tuner to push the exact line you need.

For most damage dealers the two best substats are CRIT Rate and CRIT DMG — aim to keep them near a 1 CRIT Rate : 2 CRIT DMG ratio for balance. After that, ATK%. Anomaly agents swap toward Anomaly Proficiency and ATK% instead. Stun agents value Impact on slot VI.

Filtering tip: read the substats while the disc is still level 0. An S-rank with two CRIT lines (or CRIT + ATK%) already is worth leveling; a disc full of flat HP/DEF for a damage dealer should be dismantled without regret.