diff --git a/frontend/src/gen/api.ts b/frontend/src/gen/api.ts
index 6df43d17..6c5b9fc9 100644
--- a/frontend/src/gen/api.ts
+++ b/frontend/src/gen/api.ts
@@ -324,6 +324,23 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/artifacts/presigned/{listing_id}": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /** Get Presigned Url */
+        post: operations["get_presigned_url_artifacts_presigned__listing_id__post"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/keys/new": {
         parameters: {
             query?: never;
@@ -2683,6 +2700,39 @@ export interface operations {
             };
         };
     };
+    get_presigned_url_artifacts_presigned__listing_id__post: {
+        parameters: {
+            query: {
+                filename: string;
+            };
+            header?: never;
+            path: {
+                listing_id: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": Record<string, never>;
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
     new_key_keys_new_post: {
         parameters: {
             query?: never;
diff --git a/frontend/src/hooks/api.tsx b/frontend/src/hooks/api.tsx
index b92d0e5d..ae93302f 100644
--- a/frontend/src/hooks/api.tsx
+++ b/frontend/src/hooks/api.tsx
@@ -25,4 +25,38 @@ export default class api {
       },
     });
   }
+
+  public async uploadKernel(file: File, listing_id: string) {
+    const { data } = await this.client.POST(
+      "/artifacts/presigned/{listing_id}",
+      {
+        params: {
+          path: {
+            listing_id,
+          },
+          query: {
+            filename: file.name,
+          },
+        },
+      },
+    );
+
+    if (!data?.upload_url) {
+      throw new Error("Failed to get upload URL");
+    }
+
+    const uploadResponse = await fetch(data.upload_url, {
+      method: "PUT",
+      body: file,
+      headers: {
+        "Content-Type": "application/octet-stream",
+      },
+    });
+
+    if (!uploadResponse.ok) {
+      throw new Error(`Upload failed: ${uploadResponse.statusText}`);
+    }
+
+    return data.artifact_id;
+  }
 }
diff --git a/store/app/crud/artifacts.py b/store/app/crud/artifacts.py
index 0ca2a52d..ad5e469b 100644
--- a/store/app/crud/artifacts.py
+++ b/store/app/crud/artifacts.py
@@ -260,35 +260,6 @@ async def _upload_and_store(
         )
         return artifact
 
-    async def _upload_kernel(
-        self,
-        name: str,
-        file: UploadFile,
-        listing: Listing,
-        description: str | None = None,
-    ) -> Artifact:
-        artifact = Artifact.create(
-            user_id=listing.user_id,
-            listing_id=listing.id,
-            name=name,
-            artifact_type="kernel",
-            description=description,
-        )
-
-        file_data = io.BytesIO(await file.read())
-        s3_filename = get_artifact_name(artifact=artifact)
-
-        await asyncio.gather(
-            self._upload_to_s3(
-                data=file_data,
-                name=name,
-                filename=s3_filename,
-                content_type="application/octet-stream",
-            ),
-            self._add_item(artifact),
-        )
-        return artifact
-
     async def upload_artifact(
         self,
         name: str,
@@ -300,8 +271,6 @@ async def upload_artifact(
         match artifact_type:
             case "image":
                 return await self._upload_image(name, file, listing, description)
-            case "kernel":
-                return await self._upload_kernel(name, file, listing, description)
             case "stl" | "obj" | "ply" | "dae":
                 return await self._upload_mesh(name, file, listing, artifact_type, description)
             case "urdf" | "mjcf":
diff --git a/store/app/routers/artifacts.py b/store/app/routers/artifacts.py
index bdbf1593..0aa61e73 100644
--- a/store/app/routers/artifacts.py
+++ b/store/app/routers/artifacts.py
@@ -16,11 +16,13 @@
     Artifact,
     ArtifactSize,
     ArtifactType,
+    KernelArtifactType,
     Listing,
     User,
     can_write_artifact,
     can_write_listing,
     check_content_type,
+    get_artifact_name,
     get_artifact_type,
     get_artifact_urls,
 )
@@ -411,3 +413,64 @@ async def set_main_image(
 
     await crud.set_main_image(listing_id, artifact_id)
     return True
+
+
+class PresignedUrlResponse(BaseModel):
+    upload_url: str
+    artifact_id: str
+
+
+@router.post("/presigned/{listing_id}", response_model=PresignedUrlResponse)
+async def get_presigned_url(
+    listing_id: str,
+    filename: str,
+    user: Annotated[User, Depends(get_session_user_with_write_permission)],
+    crud: Annotated[Crud, Depends(Crud.get)],
+) -> PresignedUrlResponse:
+    if not filename:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Filename was not provided",
+        )
+
+    name, extension = os.path.splitext(filename)
+    if extension.lower() != ".img":
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST, detail="Only .img files are supported for kernel uploads"
+        )
+
+    artifact_type: KernelArtifactType = "kernel"
+
+    listing = await crud.get_listing(listing_id)
+    if listing is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Could not find listing")
+    if not await can_write_listing(user, listing):
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="No permission to upload")
+
+    artifact = Artifact.create(
+        user_id=listing.user_id,
+        listing_id=listing.id,
+        name=name,
+        artifact_type=artifact_type,
+    )
+    await crud._add_item(artifact)
+
+    try:
+        s3_filename = get_artifact_name(artifact=artifact)
+
+        presigned_url = await crud.s3.meta.client.generate_presigned_url(
+            ClientMethod="put_object",
+            Params={
+                "Bucket": settings.s3.bucket,
+                "Key": f"{settings.s3.prefix}{s3_filename}",
+                "ContentType": "application/octet-stream",
+                "ContentDisposition": f'attachment; filename="{name}"',
+            },
+            ExpiresIn=3600,
+        )
+
+        return PresignedUrlResponse(upload_url=presigned_url, artifact_id=artifact.id)
+
+    except Exception as e:
+        await crud._delete_item(artifact)
+        raise HTTPException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, detail=str(e))
diff --git a/store/settings/environment.py b/store/settings/environment.py
index cbdb0b5f..17f3fe80 100644
--- a/store/settings/environment.py
+++ b/store/settings/environment.py
@@ -42,7 +42,7 @@ class ArtifactSettings:
     large_image_size: tuple[int, int] = field(default=(1536, 1536))
     small_image_size: tuple[int, int] = field(default=(256, 256))
     min_bytes: int = field(default=16)
-    max_bytes: int = field(default=2**30)
+    max_bytes: int = field(default=1536 * 1536 * 25)
     quality: int = field(default=80)
     max_concurrent_file_uploads: int = field(default=3)