diff --git a/doc/changelog.d/2169.added.md b/doc/changelog.d/2169.added.md
new file mode 100644
index 0000000000..a6eaa99541
--- /dev/null
+++ b/doc/changelog.d/2169.added.md
@@ -0,0 +1 @@
+Option to write body facets on save
diff --git a/src/ansys/geometry/core/_grpc/_services/v0/conversions.py b/src/ansys/geometry/core/_grpc/_services/v0/conversions.py
index b211720bda..f7dc96063e 100644
--- a/src/ansys/geometry/core/_grpc/_services/v0/conversions.py
+++ b/src/ansys/geometry/core/_grpc/_services/v0/conversions.py
@@ -1161,3 +1161,23 @@ def _nurbs_curves_compatibility(backend_version: "semver.Version", grpc_geometri
             + "26.1.0, but the current version used is "
             + f"{backend_version}."
         )
+
+
+def _check_write_body_facets_input(backend_version: "semver.Version", write_body_facets: bool):
+    """Check if the backend version is compatible with NURBS curves in sketches.
+
+    Parameters
+    ----------
+    backend_version : semver.Version
+        The version of the backend.
+    write_body_facets : bool
+        Option to write out body facets.
+    """
+    if write_body_facets and backend_version < (26, 1, 0):
+        from ansys.geometry.core.logger import LOG
+
+        LOG.warning(
+            "The usage of write_body_facets requires a minimum Ansys release version of "
+            + "26.1.0, but the current version used is "
+            + f"{backend_version}."
+        )
diff --git a/src/ansys/geometry/core/_grpc/_services/v0/designs.py b/src/ansys/geometry/core/_grpc/_services/v0/designs.py
index 6fec2e0110..b74961cfc7 100644
--- a/src/ansys/geometry/core/_grpc/_services/v0/designs.py
+++ b/src/ansys/geometry/core/_grpc/_services/v0/designs.py
@@ -26,7 +26,11 @@
 from ansys.geometry.core.errors import protect_grpc
 
 from ..base.designs import GRPCDesignsService
-from .conversions import build_grpc_id, from_design_file_format_to_grpc_part_export_format
+from .conversions import (
+    _check_write_body_facets_input,
+    build_grpc_id,
+    from_design_file_format_to_grpc_part_export_format,
+)
 
 
 class GRPCDesignsServiceV0(GRPCDesignsService):  # pragma: no cover
@@ -106,8 +110,12 @@ def put_active(self, **kwargs) -> dict:  # noqa: D102
     def save_as(self, **kwargs) -> dict:  # noqa: D102
         from ansys.api.dbu.v0.designs_pb2 import SaveAsRequest
 
+        _check_write_body_facets_input(kwargs["backend_version"], kwargs["write_body_facets"])
+
         # Create the request - assumes all inputs are valid and of the proper type
-        request = SaveAsRequest(filepath=kwargs["filepath"])
+        request = SaveAsRequest(
+            filepath=kwargs["filepath"], write_body_facets=kwargs["write_body_facets"]
+        )
 
         # Call the gRPC service
         _ = self.stub.SaveAs(request)
@@ -119,9 +127,12 @@ def save_as(self, **kwargs) -> dict:  # noqa: D102
     def download_export(self, **kwargs) -> dict:  # noqa: D102
         from ansys.api.dbu.v0.designs_pb2 import DownloadExportFileRequest
 
+        _check_write_body_facets_input(kwargs["backend_version"], kwargs["write_body_facets"])
+
         # Create the request - assumes all inputs are valid and of the proper type
         request = DownloadExportFileRequest(
-            format=from_design_file_format_to_grpc_part_export_format(kwargs["format"])
+            format=from_design_file_format_to_grpc_part_export_format(kwargs["format"]),
+            write_body_facets=kwargs["write_body_facets"],
         )
 
         # Call the gRPC service
@@ -136,9 +147,12 @@ def download_export(self, **kwargs) -> dict:  # noqa: D102
     def stream_download_export(self, **kwargs) -> dict:  # noqa: D102
         from ansys.api.dbu.v0.designs_pb2 import DownloadExportFileRequest
 
+        _check_write_body_facets_input(kwargs["backend_version"], kwargs["write_body_facets"])
+
         # Create the request - assumes all inputs are valid and of the proper type
         request = DownloadExportFileRequest(
-            format=from_design_file_format_to_grpc_part_export_format(kwargs["format"])
+            format=from_design_file_format_to_grpc_part_export_format(kwargs["format"]),
+            write_body_facets=kwargs["write_body_facets"],
         )
 
         # Call the gRPC service
diff --git a/src/ansys/geometry/core/designer/design.py b/src/ansys/geometry/core/designer/design.py
index 74f6f59f77..8406ad4648 100644
--- a/src/ansys/geometry/core/designer/design.py
+++ b/src/ansys/geometry/core/designer/design.py
@@ -229,19 +229,25 @@ def add_material(self, material: Material) -> None:
 
     @check_input_types
     @ensure_design_is_active
-    def save(self, file_location: Path | str) -> None:
+    def save(self, file_location: Path | str, write_body_facets: bool = False) -> None:
         """Save a design to disk on the active Geometry server instance.
 
         Parameters
         ----------
         file_location : ~pathlib.Path | str
             Location on disk to save the file to.
+        write_body_facets : bool, default: False
+            Option to write body facets into the saved file. 26R1 and later.
         """
         # Sanity checks on inputs
         if isinstance(file_location, Path):
             file_location = str(file_location)
 
-        self._grpc_client.services.designs.save_as(filepath=file_location)
+        self._grpc_client.services.designs.save_as(
+            filepath=file_location,
+            write_body_facets=write_body_facets,
+            backend_version=self._grpc_client.backend_version,
+        )
         self._grpc_client.log.debug(f"Design successfully saved at location {file_location}.")
 
     @protect_grpc
@@ -251,6 +257,7 @@ def download(
         self,
         file_location: Path | str,
         format: DesignFileFormat = DesignFileFormat.SCDOCX,
+        write_body_facets: bool = False,
     ) -> None:
         """Export and download the design from the server.
 
@@ -260,6 +267,8 @@ def download(
             Location on disk to save the file to.
         format : DesignFileFormat, default: DesignFileFormat.SCDOCX
             Format for the file to save to.
+        write_body_facets : bool, default: False
+            Option to write body facets into the saved file. SCDOCX only, 26R1 and later.
         """
         # Sanity checks on inputs
         if isinstance(file_location, str):
@@ -275,7 +284,9 @@ def download(
         if self._modeler.client.backend_version < (25, 2, 0):
             received_bytes = self.__export_and_download_legacy(format=format)
         else:
-            received_bytes = self.__export_and_download(format=format)
+            received_bytes = self.__export_and_download(
+                format=format, write_body_facets=write_body_facets
+            )
 
         # Write to file
         file_location.write_bytes(received_bytes)
@@ -323,7 +334,11 @@ def __export_and_download_legacy(self, format: DesignFileFormat) -> bytes:
 
         return received_bytes
 
-    def __export_and_download(self, format: DesignFileFormat) -> bytes:
+    def __export_and_download(
+        self,
+        format: DesignFileFormat,
+        write_body_facets: bool = False,
+    ) -> bytes:
         """Export and download the design from the server.
 
         Parameters
@@ -351,14 +366,22 @@ def __export_and_download(self, format: DesignFileFormat) -> bytes:
             DesignFileFormat.STRIDE,
         ]:
             try:
-                response = self._grpc_client.services.designs.download_export(format=format)
+                response = self._grpc_client.services.designs.download_export(
+                    format=format,
+                    write_body_facets=write_body_facets,
+                    backend_version=self._grpc_client.backend_version,
+                )
             except Exception:
                 self._grpc_client.log.warning(
                     f"Failed to download the file in {format} format."
                     " Attempting to stream download."
                 )
                 # Attempt to download the file via streaming
-                response = self._grpc_client.services.designs.stream_download_export(format=format)
+                response = self._grpc_client.services.designs.stream_download_export(
+                    format=format,
+                    write_body_facets=write_body_facets,
+                    backend_version=self._grpc_client.backend_version,
+                )
         else:
             self._grpc_client.log.warning(
                 f"{format} format requested is not supported. Ignoring download request."
diff --git a/tests/_incompatible_tests.yml b/tests/_incompatible_tests.yml
index 79ee74d704..c073518bcd 100644
--- a/tests/_incompatible_tests.yml
+++ b/tests/_incompatible_tests.yml
@@ -102,6 +102,8 @@ backends:
       # Bug fix included from 26.1 onwards
       - tests/integration/test_design_import.py::test_named_selections_after_file_insert
       - tests/integration/test_design_import.py::test_named_selections_after_file_open
+      # Export body facets add in 26.1
+      - tests/integration/test_design.py::test_write_body_facets_on_save
 
   - version: "24.2"
     incompatible_tests:
@@ -198,6 +200,8 @@ backends:
       # Bug fix included from 26.1 onwards
       - tests/integration/test_design_import.py::test_named_selections_after_file_insert
       - tests/integration/test_design_import.py::test_named_selections_after_file_open
+      # Export body facets add in 26.1
+      - tests/integration/test_design.py::test_write_body_facets_on_save
 
   - version: "25.1"
     incompatible_tests:
@@ -263,6 +267,8 @@ backends:
       # Bug fix included from 26.1 onwards
       - tests/integration/test_design_import.py::test_named_selections_after_file_insert
       - tests/integration/test_design_import.py::test_named_selections_after_file_open
+      # Export body facets add in 26.1
+      - tests/integration/test_design.py::test_write_body_facets_on_save
 
   - version: "25.2"
     incompatible_tests:
@@ -292,3 +298,5 @@ backends:
       # Bug fix included from 26.1 onwards
       - tests/integration/test_design_import.py::test_named_selections_after_file_insert
       - tests/integration/test_design_import.py::test_named_selections_after_file_open
+      # Export body facets add in 26.1
+      - tests/integration/test_design.py::test_write_body_facets_on_save
diff --git a/tests/integration/test_design.py b/tests/integration/test_design.py
index c05e53ecf0..17c2a5c3ba 100644
--- a/tests/integration/test_design.py
+++ b/tests/integration/test_design.py
@@ -23,6 +23,7 @@
 
 import os
 from pathlib import Path
+import zipfile
 
 import matplotlib.colors as mcolors
 import numpy as np
@@ -3579,3 +3580,33 @@ def test_component_make_independent(modeler: Modeler):
     comp = design.components[0].components[-1].components[-1]  # stale from update-design-in-place
 
     assert not Accuracy.length_is_equal(comp.bodies[0].volume.m, face.body.volume.m)
+
+
+def test_write_body_facets_on_save(modeler: Modeler, tmp_path_factory: pytest.TempPathFactory):
+    design = modeler.open_file(Path(FILES_DIR, "cars.scdocx"))
+
+    # First file without body facets
+    filepath_no_facets = tmp_path_factory.mktemp("test_design") / "cars_no_facets.scdocx"
+    design.download(filepath_no_facets)
+
+    # Second file with body facets
+    filepath_with_facets = tmp_path_factory.mktemp("test_design") / "cars_with_facets.scdocx"
+    design.download(filepath_with_facets, write_body_facets=True)
+
+    # Compare file sizes
+    size_no_facets = filepath_no_facets.stat().st_size
+    size_with_facets = filepath_with_facets.stat().st_size
+
+    assert size_with_facets > size_no_facets
+
+    # Ensure facets.bin and renderlist.xml files exist
+    with zipfile.ZipFile(filepath_with_facets, "r") as zip_ref:
+        namelist = set(zip_ref.namelist())
+
+    expected_files = {
+        "SpaceClaim/Graphics/facets.bin",
+        "SpaceClaim/Graphics/renderlist.xml",
+    }
+
+    missing = expected_files - namelist
+    assert not missing