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MHActive1.png [Active] Throw a KS-83 bomb that disrupts enemies' reflexes. It will disrupt their reflex 3 times.
Enemies hit will be inflicted with a Reflex Disruption debuff, and have their Magical Defense and Movement Speed decreased. (Max of 3 stacks)
The attached KS-83 bomb can be shaken off by tapping the L.png/R.png direction keys.
Robot Detonation Reaction Skill

ECP Using Skill

  • Consumes ECP instead of MP.
  • Upon activating Over Strike, skill cannot be used.

Final Enhanced Skill


Class Level Required
Metal Heart 15

Skill Information

Mode Damage (Magical) Reflex Disruption Max Hits ECP Usage Cooldown
KS-83 Clash KS-83 Reflex Disruption KS-83 Explosion Magic Defense Reduction Movement Speed Reduction Max Stacks KS-83 Clash KS-83 Reflex Disruption KS-83 Explosion
PvE 132% 34% 537% 20% 40% 3 1 10 1 35 ECP 6 Seconds
PvP 43% 11% 180%
PvE 132% 34% 537% 30% 50% 3 1 10 1 35 ECP 6 Seconds
PvP 43% 11% 180%

Skill Traits

Empowered KS-83 Powerful KS-83
Attribute Effect Attribute Effect Cooldown
Damage increased to 120% Super Armor added to the skill
Cooldown increased to 120%
7.2 Seconds

Total Damage

Mode Regular
Normal Empowered
PvE 1,009% 1,210.8%
PvP 333% 399.6%

Related Skills

MHActive2.png Robot Detonation OptTrans5.png Sub Mech Revolution
Lock.gifForbidden Tome of Secrets II.png Forbidden Secret Manual (II) is needed to unlock this skill, available through the Power of Transcendence Skill Quest or Item Mall.

Tips and Details

  • This skill is affected by Sub Mech Revolution, making it harder to shake off and allowing the explosion to bypass an enemy's defense.
  • Due to the duration of the debuff, it is impossible to apply three stacks of Reflex Disruption without the skill being affected by a cooldown reduction effect (such as a Transcendence slot).
  • When shaken off of the victim, the KS-83 bomb will explode instead of falling off.


Date Changes
03/24/2016 07/27/2016
  • KS-83 added.
05/19/2016 -
  • Fixed issue where continuous damage not being applied by The Ring of Flexibility (II).
08/11/2016 09/28/2016
  • Voice error fixed.
01/12/2017 01/24/2017
  • Damage decreased.
04/27/2017 05/10/2017
  • Damage increased.
  • None
04/05/2018 04/18/2018
  • KS-83 Reflex Disruption damage increased.
  • KS-83 Clash damage decreased.
  • KS-83 Explosion damage decreased.
08/14/2019 08/28/2019
  • KS-83 Explosion Damage increased.
  • ECP Usage increased.

Metal Heart Skills
Special Active
MHSActive1.png Air Mecha : Gale Force     MHSActive2.png Ez-8 Countdown     MHSActive3.png Ex-S Viper     MHSActive4.png Sparrow Factory     MHSActive5.png Mecha Drop
MHActive1.png KS-83     MHActive2.png Robot Detonation
MHBuff.png Limit Over
MHPassive.png Mechanic Mastery