diff --git a/src/main/java/codechicken/nei/config/IMCHandler.java b/src/main/java/codechicken/nei/config/IMCHandler.java
index 91d3f21c..ace9bda2 100644
--- a/src/main/java/codechicken/nei/config/IMCHandler.java
+++ b/src/main/java/codechicken/nei/config/IMCHandler.java
@@ -2,17 +2,26 @@ package codechicken.nei.config;
 
 import codechicken.core.CommonUtils;
 import codechicken.nei.NEIClientConfig;
+import codechicken.nei.NEIServerUtils;
+import codechicken.nei.recipe.CatalystInfo;
 import codechicken.nei.recipe.GuiRecipeTab;
 import codechicken.nei.recipe.HandlerInfo;
+import codechicken.nei.recipe.RecipeCatalysts;
 import cpw.mods.fml.common.FMLLog;
 import cpw.mods.fml.common.Loader;
 import cpw.mods.fml.common.event.FMLInterModComms;
 import cpw.mods.fml.common.event.FMLInterModComms.IMCMessage;
+import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 public class IMCHandler {
+    private static final Set<String> processedCatalystSenders = new HashSet<>();
     private IMCHandler() {}
     
     public static void processIMC(List<FMLInterModComms.IMCMessage> messages) {
@@ -20,10 +29,19 @@ public class IMCHandler {
             String type = message.key;
             if (type == null || type.isEmpty()) continue;
             if (CommonUtils.isClient()) {
-                if (type.equals("registerHandlerInfo")) {
-                    handleRegisterHandlerInfo(message);
-                } else if (type.equals("removeHandlerInfo")) {
-                    handleRemoveHandlerInfo(message);
+                switch (type) {
+                    case "registerHandlerInfo":
+                        handleRegisterHandlerInfo(message);
+                        break;
+                    case "removeHandlerInfo":
+                        handleRemoveHandlerInfo(message);
+                        break;
+                    case "registerCatalystInfo":
+                        handleRegisterCatalystInfo(message);
+                        break;
+                    case "removeCatalystInfo":
+                        handleRemoveCatalystInfo(message);
+                        break;
                 }
             }
 
@@ -91,6 +109,72 @@ public class IMCHandler {
         GuiRecipeTab.handlerRemoverFromIMC.add(handler);
     }
 
+    private static void handleRegisterCatalystInfo(IMCMessage message) {
+        if (!message.isNBTMessage())  {
+            logInvalidMessage(message, "NBT");
+            return;
+        }
+
+        if (!processedCatalystSenders.contains(message.getSender())) {
+            NEIClientConfig.logger.info("Processing registerCatalystInfo from " + message.getSender());
+            processedCatalystSenders.add(message.getSender());
+        }
+        final NBTTagCompound tag = message.getNBTValue();
+        final String handlerID = tag.getString("handlerID");
+        if (handlerID.isEmpty()) {
+            NEIClientConfig.logger.warn("Missing handlerID for registerCatalystInfo!");
+            return;
+        }
+        final String itemName = tag.getString("itemName");
+        final String nbtInfo = tag.hasKey("nbtInfo") ? tag.getString("nbtInfo") : null;
+        if (itemName.isEmpty()) {
+            NEIClientConfig.logger.warn(String.format("Missing itemName for registerCatalystInfo in `%s`!", handlerID));
+            return;
+        }
+        final ItemStack itemStack = NEIServerUtils.getModdedItem(itemName, nbtInfo);
+        if (itemStack == null) {
+            NEIClientConfig.logger.warn(String.format("Cannot find item `%s`!", itemName));
+            return;
+        }
+        final int priority = tag.getInteger("priority");
+
+        RecipeCatalysts.addOrPut(RecipeCatalysts.catalystsAdderFromIMC, handlerID, new CatalystInfo(itemStack, priority));
+        NEIClientConfig.logger.info(String.format("Added catalyst `%s` to handler %s", itemStack.getDisplayName(), handlerID));
+    }
+
+    private static void handleRemoveCatalystInfo(IMCMessage message) {
+        if (!message.isNBTMessage())  {
+            logInvalidMessage(message, "NBT");
+            return;
+        }
+
+        NEIClientConfig.logger.info("Processing removeCatalystInfo from " + message.getSender());
+        final NBTTagCompound tag = message.getNBTValue();
+        final String handlerID = tag.getString("handlerID");
+        if (handlerID.isEmpty()) {
+            NEIClientConfig.logger.warn("Missing handlerID for registerCatalystInfo!");
+            return;
+        }
+        final String itemName = tag.getString("itemName");
+        final String nbtInfo = tag.hasKey("nbtInfo") ? tag.getString("nbtInfo") : null;
+        if (itemName.isEmpty()) {
+            NEIClientConfig.logger.warn(String.format("Missing itemName for registerCatalystInfo in `%s`!", handlerID));
+            return;
+        }
+        final ItemStack itemStack = NEIServerUtils.getModdedItem(itemName, nbtInfo);
+        if (itemStack == null) {
+            NEIClientConfig.logger.warn(String.format("Cannot find item `%s`!", itemName));
+            return;
+        }
+
+        if (RecipeCatalysts.catalystsRemoverFromIMC.containsKey(handlerID)) {
+            RecipeCatalysts.catalystsRemoverFromIMC.get(handlerID).add(itemStack);
+        } else {
+            RecipeCatalysts.catalystsRemoverFromIMC.put(handlerID, new ArrayList<>(Collections.singletonList(itemStack)));
+        }
+        NEIClientConfig.logger.info(String.format("Removed catalyst `%s` from handler %s", itemStack.getDisplayName(), handlerID));
+    }
+
 
     private static void logInvalidMessage(FMLInterModComms.IMCMessage message, String type) {
         FMLLog.bigWarning(String.format("Received invalid IMC '%s' from %s. Not a %s Message.", message.key, message.getSender(), type));
diff --git a/src/main/java/codechicken/nei/recipe/RecipeCatalysts.java b/src/main/java/codechicken/nei/recipe/RecipeCatalysts.java
index 53919ed4..7c1da597 100644
--- a/src/main/java/codechicken/nei/recipe/RecipeCatalysts.java
+++ b/src/main/java/codechicken/nei/recipe/RecipeCatalysts.java
@@ -29,6 +29,8 @@ import java.util.Map;
 public class RecipeCatalysts {
     private static final Map<String, CatalystInfoList> catalystsAdderFromAPI = new HashMap<>();
     private static final Map<String, List<ItemStack>> catalystsRemoverFromAPI = new HashMap<>();
+    public static final Map<String, CatalystInfoList> catalystsAdderFromIMC = new HashMap<>();
+    public static final Map<String, List<ItemStack>> catalystsRemoverFromIMC = new HashMap<>();
     private static final Map<String, CatalystInfoList> recipeCatalystMap = new HashMap<>();
     private static Map<String, List<PositionedStack>> positionedRecipeCatalystMap = new HashMap<>();
     private static final List<String> forceClassNameList = new ArrayList<>();
@@ -161,6 +163,7 @@ public class RecipeCatalysts {
                 // todo
                 final String minVersion = record.get("minVersion");
                 final String maxVersion = record.get("maxVersion");
+                //
                 final boolean forceClassName = Boolean.parseBoolean(record.get("forceClassName"));
 
                 if (requiresMod && !Loader.isModLoaded(modId)) continue;
@@ -209,6 +212,13 @@ public class RecipeCatalysts {
             }
         }
 
+        for (Map.Entry<String, CatalystInfoList> entry : catalystsAdderFromIMC.entrySet()) {
+            String handlerID = entry.getKey();
+            for (CatalystInfo catalyst : entry.getValue()) {
+                addOrPut(recipeCatalystMap, handlerID, catalyst);
+            }
+        }
+
         for (Map.Entry<String, List<ItemStack>> entry : catalystsRemoverFromAPI.entrySet()) {
             String handlerID = entry.getKey();
             if (recipeCatalystMap.containsKey(handlerID)) {
@@ -217,6 +227,14 @@ public class RecipeCatalysts {
             }
         }
 
+        for (Map.Entry<String, List<ItemStack>> entry : catalystsRemoverFromIMC.entrySet()) {
+            String handlerID = entry.getKey();
+            if (recipeCatalystMap.containsKey(handlerID)) {
+                CatalystInfoList catalysts = recipeCatalystMap.get(handlerID);
+                entry.getValue().forEach(catalysts::remove);
+            }
+        }
+
         updatePosition(getHeight(), true);
     }
 
@@ -234,7 +252,7 @@ public class RecipeCatalysts {
                 handler.getHandlerId());
     }
 
-    private static void addOrPut(Map<String, CatalystInfoList> map, String handlerID, CatalystInfo catalyst) {
+    public static void addOrPut(Map<String, CatalystInfoList> map, String handlerID, CatalystInfo catalyst) {
         if (map.containsKey(handlerID)) {
             map.get(handlerID).add(catalyst);
         } else {