diff --git a/src/main/java/com/cleanroommc/fugue/mixin/extrautils2/XUBlockStatic$3Mixin.java b/src/main/java/com/cleanroommc/fugue/mixin/extrautils2/XUBlockStatic$3Mixin.java
new file mode 100644
index 0000000..c7752aa
--- /dev/null
+++ b/src/main/java/com/cleanroommc/fugue/mixin/extrautils2/XUBlockStatic$3Mixin.java
@@ -0,0 +1,61 @@
+package com.cleanroommc.fugue.mixin.extrautils2;
+
+import com.rwtema.extrautils2.backend.XUBlock;
+import com.rwtema.extrautils2.backend.XUBlockStatic;
+import com.rwtema.extrautils2.backend.model.MutableModel;
+import com.rwtema.extrautils2.backend.model.PassthruModelBlock;
+import com.rwtema.extrautils2.backend.model.Transforms;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.client.renderer.block.model.BakedQuad;
+import net.minecraft.client.renderer.block.model.ModelResourceLocation;
+import net.minecraft.util.BlockRenderLayer;
+import net.minecraft.util.EnumFacing;
+import net.minecraftforge.client.MinecraftForgeClient;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
+import org.spongepowered.asm.mixin.*;
+
+import javax.annotation.Nonnull;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * @author ZZZank
+ */
+@Mixin(targets = "com.rwtema.extrautils2.backend.XUBlockStatic$3", remap = false)
+public abstract class XUBlockStatic$3Mixin extends PassthruModelBlock {
+    @Shadow
+    @Final
+    XUBlockStatic this$0;
+
+    @Shadow
+    HashMap<IBlockState, HashMap<EnumFacing, HashMap<BlockRenderLayer, List<BakedQuad>>>> cachedLists;
+
+    @Unique
+    private final Object fugue$lock = new Object();
+
+    private XUBlockStatic$3Mixin(XUBlock block, IBlockState key, ModelResourceLocation modelResourceLocation) {
+        super(block, key, modelResourceLocation);
+    }
+
+    /**
+     * @author ZZZank
+     * @reason original implementation forces the usage of {@link HashMap}, which is NOT concurrency-safe
+     */
+    @Overwrite
+    @Nonnull
+    @SideOnly(Side.CLIENT)
+    @Override
+    public List<BakedQuad> getQuads(IBlockState state, EnumFacing side, long rand) {
+        synchronized (fugue$lock) {
+            return cachedLists
+                .computeIfAbsent(state, XUBlockStatic::dummyCreateHash)
+                .computeIfAbsent(side, XUBlockStatic::dummyCreateHash)
+                .computeIfAbsent(MinecraftForgeClient.getRenderLayer(), (layer) -> {
+                    MutableModel model = new MutableModel(Transforms.blockTransforms);
+                    this$0.cachedModels.get(state).loadIntoMutable(model, layer);
+                    return model.getQuads(state, side, rand);
+                });
+        }
+    }
+}
diff --git a/src/main/java/com/cleanroommc/fugue/mixin/extrautils2/XUBlockStaticMixin.java b/src/main/java/com/cleanroommc/fugue/mixin/extrautils2/XUBlockStaticMixin.java
deleted file mode 100644
index ff7df17..0000000
--- a/src/main/java/com/cleanroommc/fugue/mixin/extrautils2/XUBlockStaticMixin.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.cleanroommc.fugue.mixin.extrautils2;
-
-
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Redirect;
-
-import java.util.HashMap;
-import java.util.function.Function;
-
-@Mixin(targets = "com.rwtema.extrautils2.backend.XUBlockStatic$3", remap = false)
-public class XUBlockStaticMixin {
-    @Redirect(method = "getQuads", at = @At(value = "INVOKE", target = "Ljava/util/HashMap;computeIfAbsent(Ljava/lang/Object;Ljava/util/function/Function;)Ljava/lang/Object;"))
-    private Object hackCIA(HashMap instance, Object n, Function<Object, Object> k) {
-        if (instance.containsKey(n)) {
-            return instance.get(n);
-        } else {
-            Object v = k.apply(n);
-            instance.put(n, v);
-            return v;
-        }
-    }
-
-}
diff --git a/src/main/resources/fugue.mixin.mod.json b/src/main/resources/fugue.mixin.mod.json
index 0eb2101..af760d5 100644
--- a/src/main/resources/fugue.mixin.mod.json
+++ b/src/main/resources/fugue.mixin.mod.json
@@ -16,7 +16,6 @@
     "extrautils2.FieldSetterMixin",
     "extrautils2.TileIndexerMixin",
     "extrautils2.TransferNodeEnergyMixin",
-    "extrautils2.XUBlockStaticMixin",
     "gregtech.GTRecipeInputCacheMixin",
     "hammercore.ReflectionUtilMixin",
     "howlingmoon.WerewolfCapabilityMixin",
@@ -35,6 +34,7 @@
   ],
   "client": [
     "custommainmenu.SlideshowMixin",
+    "extrautils2.XUBlockStatic$3Mixin",
     "jei.RecipesGuiMixin",
     "mcjty.AbstractContainerWidgetMixin",
     "mcjty.SliderMixin"