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Reflex Coil
Warframe · Mod

Reflex Coil

Melee heavy-attack efficiency mod

Released Oct 25, 2012

Reflex Coil grants melee Heavy Attack Efficiency up to +60%. Consider it when your weapon use includes heavy attacks and reducing their combo cost is useful; it provides no separately listed damage or wind-up bonus.

TypeMeleePolaritynaramonMax rank5Base drain2VariantStandardRarityUncommon
Reflex Coil GUIDE

Understand Reflex Coil

Useful when…

  • Use on a compatible melee weapon when heavy-attack efficiency is a priority for the setup.
  • Choose a partial rank if the efficiency gained is useful but the higher fusion costs are not justified.

What it does

Reflex Coil is a standard melee mod with Naramon polarity, base drain 2, and a maximum rank of 5. It grants +10% Heavy Attack Efficiency at rank 0, +40% at rank 3, and +60% at rank 5. The listed effect is efficiency only; it does not specify increased damage or faster wind-up.

wiki.warframe.com ↗

Use and slot tradeoff

Consider Reflex Coil when heavy attacks are part of your melee use and their efficiency matters. It uses a standard melee slot, so equipping it means forgoing another standard-slot effect. The listed Naramon polarity may inform the slot match; no other application restrictions are supplied.

Rank costs and sensible investment

It ranks from 0 to 5. The provided steps list 20 Endo and 966 credits for 0→1, 80 Endo and 3,864 credits for 2→3, and 320 Endo and 15,456 credits for 4→5. Rank 3 already reaches +40%; proceeding to rank 5 adds 20 percentage points, with the last listed step costing 320 Endo and 15,456 credits. Whether that increment merits investment depends on how often the weapon uses heavy attacks.

wiki.warframe.com ↗

Alternatives and compatibility

Flawed Reflex Coil reaches +40% at rank 3 but is explicitly incompatible with Reflex Coil. Galvanized Reflex lists +50% efficiency and, on melee kill, +20 initial combo for 20 seconds, stacking up to four times; it is also explicitly named as incompatible. Amalgam Organ Shatter has a different mix of +85% Critical Damage and +60% Heavy Attack Wind Up Speed. It does not provide the same listed efficiency effect.

Limitations and tradeoffs

  • The final ranks require substantially higher listed Endo and credit costs.
  • The efficiency bonus matters only if heavy attacks are part of the weapon's use.

Common mistakes to avoid

  • Expecting Reflex Coil to increase heavy-attack damage or wind-up speed.
  • Trying to combine it with either explicitly incompatible Reflex Coil variant.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0+10% Heavy Attack Efficiency200
1+20% Heavy Attack Efficiency320966
2+30% Heavy Attack Efficiency4602,898
3+40% Heavy Attack Efficiency51406,762
4+50% Heavy Attack Efficiency630014,490
5+60% Heavy Attack Efficiency762029,946

These are listed mod effects and fusion costs, not final build damage. Matching and mismatched polarities change capacity. Totals assume starting at rank 0.

References and version

Game data version: Pinned public export

Reflex Coil — WARFRAME Wiki ↗wiki.warframe.com ↗
Technical source data for verification

These machine-readable game records support the calculations and factual checks. The wiki references above are intended for reading.

Warframe Public Export ↗Raw game data (JSON) ↗wiki.warframe.com ↗

Original data record ↗

Optional: calculate an upgrade or configurationOpen the calculator when you want a cost estimate or a compatibility check.
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Fusion cost and capacity

0Endo
0Credits
2Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0+10% Heavy Attack Efficiency200
1+20% Heavy Attack Efficiency320966
2+30% Heavy Attack Efficiency4602,898
3+40% Heavy Attack Efficiency51406,762
4+50% Heavy Attack Efficiency630014,490
5+60% Heavy Attack Efficiency762029,946

Slot polarity changes drain; fusion prices depend on mod rarity and family.

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