diff --git a/kubejs/startup_scripts/gtceu/modifications.js b/kubejs/startup_scripts/gtceu/modifications.js
new file mode 100644
index 000000000..8a488448c
--- /dev/null
+++ b/kubejs/startup_scripts/gtceu/modifications.js
@@ -0,0 +1,44 @@
+function registerGTCEuItemModifications(event) {
+
+	event.modify('gtceu:nanomuscle_helmet', item => {
+		item.armorProtection = 5
+		item.armorKnockbackResistance = 0.2
+	})
+	event.modify('gtceu:nanomuscle_chestplate', item => {
+		item.armorProtection = 10
+		item.armorKnockbackResistance = 0.2
+	})
+	event.modify('gtceu:nanomuscle_leggings', item => {
+		item.armorProtection = 8
+		item.armorKnockbackResistance = 0.2
+	})
+	event.modify('gtceu:nanomuscle_boots', item => {
+		item.armorProtection = 4
+		item.armorKnockbackResistance = 0.2
+	})
+	event.modify('gtceu:avanced_nanomuscle_chestplate', item => {
+		item.armorProtection = 10
+		item.armorKnockbackResistance = 0.2
+	})
+
+	event.modify('gtceu:quarktech_helmet', item => {
+		item.armorProtection = 7
+		item.armorKnockbackResistance = 0.25
+	})
+	event.modify('gtceu:quarktech_chestplate', item => {
+		item.armorProtection = 12
+		item.armorKnockbackResistance = 0.25
+	})
+	event.modify('gtceu:quarktech_leggings', item => {
+		item.armorProtection = 10
+		item.armorKnockbackResistance = 0.25
+	})
+	event.modify('gtceu:quarktech_boots', item => {
+		item.armorProtection = 6
+		item.armorKnockbackResistance = 0.25
+	})
+	event.modify('gtceu:advanced_quarktech_chestplate', item => {
+		item.armorProtection = 12
+		item.armorKnockbackResistance = 0.25
+	})
+}
\ No newline at end of file
diff --git a/kubejs/startup_scripts/main_startup_script.js b/kubejs/startup_scripts/main_startup_script.js
index 368103584..62ef82f38 100644
--- a/kubejs/startup_scripts/main_startup_script.js
+++ b/kubejs/startup_scripts/main_startup_script.js
@@ -22,6 +22,7 @@ ItemEvents.modification(event => {
 	registerBeneathItemModifications(event)
 	registerConstructionWandsItemModifications(event)
 	registerCreateItemModifications(event)
+	registerGTCEuItemModifications(event)
 	registerMinecraftItemModifications(event)
 })