diff --git a/data/json/bionics.json b/data/json/bionics.json
index 08e51d2ebe8a9..a4368267f268e 100644
--- a/data/json/bionics.json
+++ b/data/json/bionics.json
@@ -1110,19 +1110,15 @@
     "id": "bio_hydraulics",
     "type": "bionic",
     "name": { "str": "Hydraulic Muscles" },
-    "description": "While activated, your muscles will be greatly enhanced, increasing your strength by 20.",
+    "description": "While activated, your muscles will be greatly enhanced, setting your strength to 20.",
     "occupied_bodyparts": [ [ "torso", 10 ], [ "arm_l", 8 ], [ "arm_r", 8 ], [ "leg_l", 10 ], [ "leg_r", 10 ] ],
     "flags": [ "BIONIC_TOGGLED", "BIONIC_NPC_USABLE" ],
-    "enchantments": [
-      {
-        "condition": "ACTIVE",
-        "ench_effects": [ { "effect": "bio_hydraulics_eff", "intensity": 1 } ],
-        "values": [ { "value": "STRENGTH", "add": 20 } ]
-      }
-    ],
+    "enchantments": [ { "condition": "ACTIVE", "ench_effects": [ { "effect": "bio_hydraulics_eff", "intensity": 1 } ] } ],
     "act_cost": "10 kJ",
     "react_cost": "10 kJ",
-    "time": "1 s"
+    "time": "1 s",
+    "activated_eocs": [ "EOC_bio_hydraulics_activated" ],
+    "deactivated_eocs": [ "EOC_bio_hydraulics_deactivated" ]
   },
   {
     "id": "bio_infrared",
diff --git a/data/json/effects.json b/data/json/effects.json
index 7d6385c303456..c96a8854e070c 100644
--- a/data/json/effects.json
+++ b/data/json/effects.json
@@ -3772,6 +3772,12 @@
     "id": "bio_hydraulics_eff",
     "//": "used so bio_hydraulics could detect bionic is going off. remove if enchantments could produce sound each second or eoc could check you have active bionic"
   },
+  {
+    "type": "effect_type",
+    "id": "effect_bio_hydraulics_active",
+    "rating": "good",
+    "enchantments": [ { "values": [ { "value": "STRENGTH", "add": { "math": [ "20 - u_bio_hydraulics_strength_adjustment" ] } } ] } ]
+  },
   {
     "type": "effect_type",
     "id": "crushed",
diff --git a/data/json/effects_on_condition/bionic_active_eocs.json b/data/json/effects_on_condition/bionic_active_eocs.json
index 7c4ea8b7d6d8f..872af24455be7 100644
--- a/data/json/effects_on_condition/bionic_active_eocs.json
+++ b/data/json/effects_on_condition/bionic_active_eocs.json
@@ -61,6 +61,19 @@
       { "run_eocs": "EOC_bio_hydraulics_act", "time_in_future": 1 }
     ]
   },
+  {
+    "type": "effect_on_condition",
+    "id": "EOC_bio_hydraulics_activated",
+    "effect": [
+      { "math": [ "u_bio_hydraulics_strength_adjustment = u_val('strength')" ] },
+      { "u_add_effect": "effect_bio_hydraulics_active", "duration": "PERMANENT" }
+    ]
+  },
+  {
+    "type": "effect_on_condition",
+    "id": "EOC_bio_hydraulics_deactivated",
+    "effect": [ { "u_lose_effect": "effect_bio_hydraulics_active" } ]
+  },
   {
     "type": "effect_on_condition",
     "id": "EOC_bio_blood_filter",