diff --git a/lib/db/generated/kysely.ts b/lib/db/generated/kysely.ts
index 6f300df..981d756 100644
--- a/lib/db/generated/kysely.ts
+++ b/lib/db/generated/kysely.ts
@@ -192,6 +192,7 @@ export interface Component {
   description: string;
   extra: string | null;
   flag: Generated<number>;
+  is_extended_promotional: number | null;
   joints: number;
   last_on_stock: Generated<number>;
   last_update: number;
@@ -809,6 +810,7 @@ export interface VComponent {
   mfr: string | null;
   package: string | null;
   preferred: number | null;
+  is_extended_promotional: number | null;
   price: string | null;
   stock: number | null;
   subcategory: string | null;
diff --git a/routes/components/list.tsx b/routes/components/list.tsx
index 8d26b56..f566e66 100644
--- a/routes/components/list.tsx
+++ b/routes/components/list.tsx
@@ -23,6 +23,7 @@ export default withWinterSpec({
     search: z.string().optional(),
     is_basic: z.boolean().optional(),
     is_preferred: z.boolean().optional(),
+    is_extended_promotional: z.boolean().optional(),
   }),
   jsonResponse: z.any(),
 } as const)(async (req, ctx) => {
@@ -39,6 +40,8 @@ export default withWinterSpec({
       "price",
       "extra",
       "basic",
+      "preferred",
+      "is_extended_promotional",
     ])
     .limit(limit)
     .orderBy("stock", "desc")
@@ -59,6 +62,10 @@ export default withWinterSpec({
     query = query.where("preferred", "=", 1)
   }
 
+  if (req.query.is_extended_promotional) {
+    query = query.where("is_extended_promotional", "=", 1)
+  }
+
   if (req.query.search) {
     const search = req.query.search // TypeScript now knows this is defined within this block
     const searchPattern = `%${search}%`
@@ -82,6 +89,7 @@ export default withWinterSpec({
     package: c.package,
     is_basic: Boolean(c.basic),
     is_preferred: Boolean(c.preferred),
+    is_extended_promotional: Boolean(c.is_extended_promotional),
     description: c.description,
     stock: c.stock,
     price: extractSmallQuantityPrice(c.price),
@@ -126,6 +134,17 @@ export default withWinterSpec({
             />
           </label>
         </div>
+        <div>
+          <label>
+            Extended Promotional Part:
+            <input
+              type="checkbox"
+              name="is_extended_promotional"
+              value="true"
+              checked={req.query.is_extended_promotional}
+            />
+          </label>
+        </div>
         <button type="submit">Filter</button>
       </form>
 
diff --git a/tests/routes/components/list.test.ts b/tests/routes/components/list1.test.ts
similarity index 76%
rename from tests/routes/components/list.test.ts
rename to tests/routes/components/list1.test.ts
index 061f1c3..f9b6e29 100644
--- a/tests/routes/components/list.test.ts
+++ b/tests/routes/components/list1.test.ts
@@ -6,4 +6,8 @@ test("GET /components/list with json param returns component data", async () =>
   const res = await axios.get("/components/list?json=true")
   expect(res.data).toHaveProperty("components")
   expect(Array.isArray(res.data.components)).toBe(true)
+
+  if (res.data.components.length > 0) {
+    expect(res.data.components[0]).toHaveProperty("is_extended_promotional")
+  }
 })
diff --git a/tests/routes/components/list2.test.ts b/tests/routes/components/list2.test.ts
new file mode 100644
index 0000000..590280c
--- /dev/null
+++ b/tests/routes/components/list2.test.ts
@@ -0,0 +1,12 @@
+import { test, expect } from "bun:test"
+import { getTestServer } from "tests/fixtures/get-test-server"
+
+test("GET /components/list supports is_extended_promotional filter", async () => {
+  const { axios } = await getTestServer()
+  const res = await axios.get(
+    "/components/list?json=true&is_extended_promotional=true",
+  )
+
+  expect(res.data).toHaveProperty("components")
+  expect(Array.isArray(res.data.components)).toBe(true)
+})