diff --git a/entry_types/scrolled/package/spec/widgets/defaultNavigation/Defaultnavigation-spec.js b/entry_types/scrolled/package/spec/widgets/defaultNavigation/Defaultnavigation-spec.js
index 10cbd7ece..c782566ea 100644
--- a/entry_types/scrolled/package/spec/widgets/defaultNavigation/Defaultnavigation-spec.js
+++ b/entry_types/scrolled/package/spec/widgets/defaultNavigation/Defaultnavigation-spec.js
@@ -2,11 +2,19 @@ import React from 'react';
 
 import {DefaultNavigation} from 'widgets/defaultNavigation/DefaultNavigation';
 
+import {useFakeTranslations} from 'pageflow/testHelpers';
 import {renderInEntry} from 'pageflow-scrolled/testHelpers';
+import userEvent from '@testing-library/user-event';
 import '@testing-library/jest-dom/extend-expect';
 
+import styles from 'widgets/defaultNavigation/DefaultNavigation.module.css';
+
 describe('DefaultNavigation', () => {
-  it('does not have style attribute on header by default', async () => {
+  useFakeTranslations({
+    'pageflow_scrolled.public.navigation.open_mobile_menu': 'Open mobile menu'
+  });
+
+  it('does not have style attribute on header by default', () => {
     const {container} = renderInEntry(
       <DefaultNavigation configuration={{}} />
     );
@@ -14,7 +22,7 @@ describe('DefaultNavigation', () => {
     expect(container.querySelector('header')).not.toHaveAttribute('style');
   });
 
-  it('supports overriding accent color', async () => {
+  it('supports overriding accent color', () => {
     const {container} = renderInEntry(
       <DefaultNavigation configuration={{accentColor: 'brand-blue'}} />
     );
@@ -23,4 +31,138 @@ describe('DefaultNavigation', () => {
       {'--theme-accent-color': 'var(--theme-palette-color-brand-blue)'
     });
   });
+
+  it('supports extra buttons component', () => {
+    const ExtraButtons = () => <button>Extra</button>;
+    const {queryByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}}
+                         ExtraButtons={ExtraButtons} />
+    );
+
+    expect(queryByRole('button', {name: 'Extra'})).not.toBeNull();
+  });
+
+  it('supports alternative mobile menu component', () => {
+    const MobileMenu = () => <div>Mobile menu</div>;
+    const {queryByText} = renderInEntry(
+      <DefaultNavigation configuration={{}}
+                         MobileMenu={MobileMenu} />
+    );
+
+    expect(queryByText('Mobile menu')).not.toBeNull();
+  });
+
+  it('does not render mobile menu button by default', () => {
+    const {queryByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}} />
+    );
+
+    expect(queryByRole('button', {name: 'Open mobile menu'})).toBeNull();
+  });
+
+  it('render mobile menu button if chapters are present', () => {
+    const {queryByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}} />,
+      {
+        seed: {
+          chapters: [{}, {}]
+        }
+      }
+    );
+
+    expect(queryByRole('button', {name: 'Open mobile menu'})).not.toBeNull();
+  });
+
+  it('toggles class to show and hide mobile menu', async () => {
+    const {getByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}} />,
+      {
+        seed: {
+          chapters: [{}, {}]
+        }
+      }
+    );
+
+    expect(getByRole('navigation')).toHaveClass(styles.navigationChaptersHidden);
+
+    const user = userEvent.setup();
+    await user.click(getByRole('button', {name: 'Open mobile menu'}));
+
+    expect(getByRole('navigation')).not.toHaveClass(styles.navigationChaptersHidden);
+  });
+
+  it('keeps mobile menu hidden if custom mobile is present', async () => {
+    const MobileMenu = () => <div>Mobile menu</div>;
+    const {getByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}}
+                         MobileMenu={MobileMenu} />,
+      {
+        seed: {
+          chapters: [{}, {}]
+        }
+      }
+    );
+
+    expect(getByRole('navigation')).toHaveClass(styles.navigationChaptersHidden);
+
+    const user = userEvent.setup();
+    await user.click(getByRole('button', {name: 'Open mobile menu'}));
+
+    expect(getByRole('navigation')).toHaveClass(styles.navigationChaptersHidden);
+  });
+
+  it('renders mobile menu button if custom mobile menu is present', () => {
+    const MobileMenu = () => <div>Mobile menu</div>;
+    const {queryByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}}
+                         MobileMenu={MobileMenu} />
+    );
+
+    expect(queryByRole('button', {name: 'Open mobile menu'})).not.toBeNull();
+  });
+
+  it('passes open prop to custom mobile menu component', async () => {
+    const MobileMenu = ({open}) => <div>Mobile menu {open ? 'open' : 'closed'}</div>;
+    const {queryByText, getByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}}
+                         MobileMenu={MobileMenu} />
+    );
+
+    expect(queryByText('Mobile menu closed')).not.toBeNull();
+
+    const user = userEvent.setup();
+    await user.click(getByRole('button', {name: 'Open mobile menu'}));
+
+    expect(queryByText('Mobile menu open')).not.toBeNull();
+  });
+
+  it('passes close prop to custom mobile menu component', async () => {
+    const MobileMenu = ({open, close}) => (
+      <div>
+        <div>Mobile menu {open ? 'open' : 'closed'}</div>
+        <button onClick={close}>Close mobile menu</button>;
+      </div>
+    );
+    const {queryByText, getByRole} = renderInEntry(
+      <DefaultNavigation configuration={{}}
+                         MobileMenu={MobileMenu} />
+    );
+
+    const user = userEvent.setup();
+    await user.click(getByRole('button', {name: 'Open mobile menu'}));
+    expect(queryByText('Mobile menu open')).not.toBeNull();
+
+    await user.click(getByRole('button', {name: 'Close mobile menu'}));
+    expect(queryByText('Mobile menu closed')).not.toBeNull();
+  });
+
+  it('passes widget configuration to custom mobile menu component', () => {
+    const MobileMenu = ({configuration}) => <div>{configuration.mobileMenuTitle}</div>;
+    const {queryByText} = renderInEntry(
+      <DefaultNavigation configuration={{mobileMenuTitle: 'Some title'}}
+                         MobileMenu={MobileMenu} />
+    );
+
+    expect(queryByText('Some title')).not.toBeNull();
+  });
 });
diff --git a/entry_types/scrolled/package/src/widgets/defaultNavigation/DefaultNavigation.js b/entry_types/scrolled/package/src/widgets/defaultNavigation/DefaultNavigation.js
index 2e4ce670e..63345f48b 100644
--- a/entry_types/scrolled/package/src/widgets/defaultNavigation/DefaultNavigation.js
+++ b/entry_types/scrolled/package/src/widgets/defaultNavigation/DefaultNavigation.js
@@ -26,7 +26,7 @@ import {Scroller} from './Scroller';
 
 import styles from './DefaultNavigation.module.css';
 
-export function DefaultNavigation({configuration}) {
+export function DefaultNavigation({configuration, ExtraButtons, MobileMenu}) {
   const [navExpanded, setNavExpanded] = useState(true);
   const [mobileNavHidden, setMobileNavHidden] = useState(true);
   const [readingProgress, setReadingProgress] = useState(0);
@@ -104,8 +104,8 @@ export function DefaultNavigation({configuration}) {
 
     return (
       <Scroller>
-        <nav className={classNames(styles.navigationChapters, {[styles.navigationChaptersHidden]: mobileNavHidden})}
-             role="navigation">
+        <nav className={classNames(styles.navigationChapters,
+                                   {[styles.navigationChaptersHidden]: mobileNavHidden || MobileMenu})}>
           <ul className={styles.chapterList}>
             {renderChapterLinks(chapters)}
           </ul>
@@ -119,38 +119,42 @@ export function DefaultNavigation({configuration}) {
 
   return (
     <>
-    <header className={classNames(styles.navigationBar, {
-      [styles.navigationBarExpanded]: (
-        navExpanded ||
-        (!isPhonePlatform && configuration.fixedOnDesktop) ||
-        !mobileNavHidden
-      ),
-      [styles.hasChapters]: hasChapters
-    })} style={{'--theme-accent-color': paletteColor(configuration.accentColor)}}>
-      <div className={styles.navigationBarContentWrapper}>
-        {hasChapters && <HamburgerIcon onClick={handleBurgerMenuClick}
-                                       mobileNavHidden={mobileNavHidden}/>}
-
-        <SkipLinks />
-        <Logo />
-
-        {renderNav()}
-
-        <div className={classNames(styles.contextIcons)}>
-          {!configuration.hideToggleMuteButton && <ToggleMuteButton />}
-          <TranslationsMenu />
-          {!theme.options.hideLegalInfoButton &&<LegalInfoMenu tooltipOffset={hideSharingButton ? -40 : 0} />}
-          {!hideSharingButton && <SharingMenu shareProviders={shareProviders} />}
+      <header className={classNames(styles.navigationBar, {
+        [styles.navigationBarExpanded]: (
+          navExpanded ||
+          (!isPhonePlatform && configuration.fixedOnDesktop) ||
+          !mobileNavHidden
+        ),
+        [styles.hasChapters]: hasChapters
+      })} style={{'--theme-accent-color': paletteColor(configuration.accentColor)}}>
+        <div className={styles.navigationBarContentWrapper}>
+          {(hasChapters || MobileMenu) && <HamburgerIcon onClick={handleBurgerMenuClick}
+                                                         mobileNavHidden={mobileNavHidden}/>}
+
+          <SkipLinks />
+          <Logo />
+
+          {renderNav()}
+          {MobileMenu && <MobileMenu configuration={configuration}
+                                     open={!mobileNavHidden}
+                                     close={() => setMobileNavHidden(true)} />}
+
+          <div className={classNames(styles.contextIcons)}>
+            {!configuration.hideToggleMuteButton && <ToggleMuteButton />}
+            <TranslationsMenu />
+            {!theme.options.hideLegalInfoButton &&<LegalInfoMenu tooltipOffset={hideSharingButton ? -40 : 0} />}
+            {!hideSharingButton && <SharingMenu shareProviders={shareProviders} />}
+            {ExtraButtons && <ExtraButtons />}
+          </div>
         </div>
-      </div>
-
-      <div className={styles.progressBar} onMouseEnter={handleProgressBarMouseEnter}>
-        <span className={styles.progressIndicator} style={{width: readingProgress + '%'}}/>
-      </div>
-    </header>
-    <Widget role="defaultNavigationExtra"
-            props={{navigationExpanded: navExpanded,
-                    mobileNavigationVisible: !mobileNavHidden}} />
+
+        <div className={styles.progressBar} onMouseEnter={handleProgressBarMouseEnter}>
+          <span className={styles.progressIndicator} style={{width: readingProgress + '%'}}/>
+        </div>
+      </header>
+      <Widget role="defaultNavigationExtra"
+              props={{navigationExpanded: navExpanded,
+                      mobileNavigationVisible: !mobileNavHidden}} />
     </>
   );
 }