diff --git a/kubejs/server_scripts/gregtech/armor.js b/kubejs/server_scripts/gregtech/armor.js
new file mode 100644
index 000000000..3dd7cff2e
--- /dev/null
+++ b/kubejs/server_scripts/gregtech/armor.js
@@ -0,0 +1,9 @@
+PlayerEvents.tick((event) => {
+    const { player } = event;
+    if (player.age % 100 != 0) return;
+    if (player.legsArmorItem == 'gtceu:nanomuscle_leggings') {
+        player.potionEffects.add("minecraft:speed", 350, 1, true, false);
+    } else {
+        player.removeEffect("minecraft:speed");
+    }
+});