diff --git a/administrator/components/com_installer/Helper/InstallerHelper.php b/administrator/components/com_installer/Helper/InstallerHelper.php
index 3d287872ae3b3..e14d5305185a0 100644
--- a/administrator/components/com_installer/Helper/InstallerHelper.php
+++ b/administrator/components/com_installer/Helper/InstallerHelper.php
@@ -22,59 +22,6 @@
  */
 class InstallerHelper
 {
-	/**
-	 * Configure the Linkbar.
-	 *
-	 * @param   string  $vName  The name of the active view.
-	 *
-	 * @return  void
-	 *
-	 * @since   1.6
-	 */
-	public static function addSubmenu($vName = 'install')
-	{
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_INSTALL'),
-			'index.php?option=com_installer',
-			$vName == 'install'
-		);
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_UPDATE'),
-			'index.php?option=com_installer&view=update',
-			$vName == 'update'
-		);
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_MANAGE'),
-			'index.php?option=com_installer&view=manage',
-			$vName == 'manage'
-		);
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_DISCOVER'),
-			'index.php?option=com_installer&view=discover',
-			$vName == 'discover'
-		);
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_DATABASE'),
-			'index.php?option=com_installer&view=database',
-			$vName == 'database'
-		);
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_WARNINGS'),
-			'index.php?option=com_installer&view=warnings',
-			$vName == 'warnings'
-		);
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_LANGUAGES'),
-			'index.php?option=com_installer&view=languages',
-			$vName == 'languages'
-		);
-		\JHtmlSidebar::addEntry(
-			Text::_('COM_INSTALLER_SUBMENU_UPDATESITES'),
-			'index.php?option=com_installer&view=updatesites',
-			$vName == 'updatesites'
-		);
-	}
-
 	/**
 	 * Get a list of filter options for the extension types.
 	 *
diff --git a/administrator/components/com_installer/View/Discover/HtmlView.php b/administrator/components/com_installer/View/Discover/HtmlView.php
index 6aeed8489370d..6171fb6c364ce 100644
--- a/administrator/components/com_installer/View/Discover/HtmlView.php
+++ b/administrator/components/com_installer/View/Discover/HtmlView.php
@@ -70,8 +70,6 @@ protected function addToolbar()
 		ToolbarHelper::custom('discover.refresh', 'refresh', 'refresh', 'COM_INSTALLER_TOOLBAR_DISCOVER', false);
 		ToolbarHelper::divider();
 
-		\JHtmlSidebar::setAction('index.php?option=com_installer&view=discover');
-
 		parent::addToolbar();
 
 		ToolbarHelper::help('JHELP_EXTENSIONS_EXTENSION_MANAGER_DISCOVER');
diff --git a/administrator/components/com_installer/View/Installer/HtmlView.php b/administrator/components/com_installer/View/Installer/HtmlView.php
index 9ceb0729d2c2c..e385693dd7adf 100644
--- a/administrator/components/com_installer/View/Installer/HtmlView.php
+++ b/administrator/components/com_installer/View/Installer/HtmlView.php
@@ -111,8 +111,5 @@ protected function addToolbar()
 			ToolbarHelper::preferences('com_installer');
 			ToolbarHelper::divider();
 		}
-
-		// Render side bar.
-		$this->sidebar = \JHtmlSidebar::render();
 	}
 }
diff --git a/administrator/components/com_installer/View/Manage/HtmlView.php b/administrator/components/com_installer/View/Manage/HtmlView.php
index d7cef4c956a19..c94de5562bfb3 100644
--- a/administrator/components/com_installer/View/Manage/HtmlView.php
+++ b/administrator/components/com_installer/View/Manage/HtmlView.php
@@ -82,8 +82,6 @@ protected function addToolbar()
 			ToolbarHelper::divider();
 		}
 
-		\JHtmlSidebar::setAction('index.php?option=com_installer&view=manage');
-
 		parent::addToolbar();
 		ToolbarHelper::help('JHELP_EXTENSIONS_EXTENSION_MANAGER_MANAGE');
 	}
diff --git a/administrator/components/com_installer/View/Update/HtmlView.php b/administrator/components/com_installer/View/Update/HtmlView.php
index 9bd669f756e3e..ed85362446d53 100644
--- a/administrator/components/com_installer/View/Update/HtmlView.php
+++ b/administrator/components/com_installer/View/Update/HtmlView.php
@@ -81,8 +81,6 @@ protected function addToolbar()
 		ToolbarHelper::custom('update.purge', 'purge', 'purge', 'COM_INSTALLER_TOOLBAR_PURGE', false);
 		ToolbarHelper::divider();
 
-		\JHtmlSidebar::setAction('index.php?option=com_installer&view=manage');
-
 		parent::addToolbar();
 		ToolbarHelper::help('JHELP_EXTENSIONS_EXTENSION_MANAGER_UPDATE');
 	}
diff --git a/administrator/components/com_installer/View/Updatesites/HtmlView.php b/administrator/components/com_installer/View/Updatesites/HtmlView.php
index 0af6247b4dc06..dcfe7829136ed 100644
--- a/administrator/components/com_installer/View/Updatesites/HtmlView.php
+++ b/administrator/components/com_installer/View/Updatesites/HtmlView.php
@@ -88,8 +88,6 @@ protected function addToolbar()
 			ToolbarHelper::custom('updatesites.rebuild', 'refresh.png', 'refresh_f2.png', 'JTOOLBAR_REBUILD', false);
 		}
 
-		\JHtmlSidebar::setAction('index.php?option=com_installer&view=updatesites');
-
 		parent::addToolbar();
 		ToolbarHelper::help('JHELP_EXTENSIONS_EXTENSION_MANAGER_UPDATESITES');
 	}
diff --git a/administrator/components/com_installer/tmpl/database/default.php b/administrator/components/com_installer/tmpl/database/default.php
index b9f8e37e2b21f..01c3da3de43c5 100644
--- a/administrator/components/com_installer/tmpl/database/default.php
+++ b/administrator/components/com_installer/tmpl/database/default.php
@@ -24,10 +24,7 @@
 <div id="installer-database" class="clearfix">
 	<form action="<?php echo Route::_('index.php?option=com_installer&view=database'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<div class="control-group">
 						<?php echo LayoutHelper::render('joomla.searchtools.default', array('view' => $this)); ?>
diff --git a/administrator/components/com_installer/tmpl/discover/default.php b/administrator/components/com_installer/tmpl/discover/default.php
index 4876f1440651b..3fd27d66b140e 100644
--- a/administrator/components/com_installer/tmpl/discover/default.php
+++ b/administrator/components/com_installer/tmpl/discover/default.php
@@ -22,10 +22,7 @@
 <div id="installer-discover" class="clearfix">
 	<form action="<?php echo Route::_('index.php?option=com_installer&view=discover'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<?php if ($this->showMessage) : ?>
 						<?php echo $this->loadTemplate('message'); ?>
diff --git a/administrator/components/com_installer/tmpl/install/default.php b/administrator/components/com_installer/tmpl/install/default.php
index ddf90a9269bfb..03b2962e83acc 100644
--- a/administrator/components/com_installer/tmpl/install/default.php
+++ b/administrator/components/com_installer/tmpl/install/default.php
@@ -31,10 +31,7 @@
 
 	<form enctype="multipart/form-data" action="<?php echo Route::_('index.php?option=com_installer&view=install'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<?php // Render messages set by extension install scripts here ?>
 					<?php if ($this->showMessage) : ?>
diff --git a/administrator/components/com_installer/tmpl/languages/default.php b/administrator/components/com_installer/tmpl/languages/default.php
index 583e364e375ad..ac3ae2ff108ac 100644
--- a/administrator/components/com_installer/tmpl/languages/default.php
+++ b/administrator/components/com_installer/tmpl/languages/default.php
@@ -22,10 +22,7 @@
 <div id="installer-languages" class="clearfix">
 	<form action="<?php echo Route::_('index.php?option=com_installer&view=languages'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<?php echo LayoutHelper::render('joomla.searchtools.default', array('view' => $this, 'options' => array('filterButton' => false))); ?>
 					<?php if (empty($this->items)) : ?>
diff --git a/administrator/components/com_installer/tmpl/manage/default.php b/administrator/components/com_installer/tmpl/manage/default.php
index 99e384e987da3..b31e99688a9db 100644
--- a/administrator/components/com_installer/tmpl/manage/default.php
+++ b/administrator/components/com_installer/tmpl/manage/default.php
@@ -22,10 +22,7 @@
 <div id="installer-manage" class="clearfix">
 	<form action="<?php echo Route::_('index.php?option=com_installer&view=manage'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<?php if ($this->showMessage) : ?>
 						<?php echo $this->loadTemplate('message'); ?>
diff --git a/administrator/components/com_installer/tmpl/update/default.php b/administrator/components/com_installer/tmpl/update/default.php
index 222ea6bd0ab54..80ca2014605d3 100644
--- a/administrator/components/com_installer/tmpl/update/default.php
+++ b/administrator/components/com_installer/tmpl/update/default.php
@@ -22,10 +22,7 @@
 <div id="installer-update" class="clearfix">
 	<form action="<?php echo Route::_('index.php?option=com_installer&view=update'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<?php if ($this->showMessage) : ?>
 						<?php echo $this->loadTemplate('message'); ?>
diff --git a/administrator/components/com_installer/tmpl/updatesites/default.php b/administrator/components/com_installer/tmpl/updatesites/default.php
index 5d7517ff25dcc..e295ab7304d09 100644
--- a/administrator/components/com_installer/tmpl/updatesites/default.php
+++ b/administrator/components/com_installer/tmpl/updatesites/default.php
@@ -22,10 +22,7 @@
 <div id="installer-manage" class="clearfix">
 	<form action="<?php echo Route::_('index.php?option=com_installer&view=updatesites'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<?php echo LayoutHelper::render('joomla.searchtools.default', array('view' => $this)); ?>
 					<?php if (empty($this->items)) : ?>
diff --git a/administrator/components/com_installer/tmpl/warnings/default.php b/administrator/components/com_installer/tmpl/warnings/default.php
index 1b40eff8060fe..2c90198305349 100644
--- a/administrator/components/com_installer/tmpl/warnings/default.php
+++ b/administrator/components/com_installer/tmpl/warnings/default.php
@@ -17,10 +17,7 @@
 <div id="installer-warnings" class="clearfix">
 	<form action="<?php echo Route::_('index.php?option=com_installer&view=warnings'); ?>" method="post" name="adminForm" id="adminForm">
 		<div class="row">
-			<div id="j-sidebar-container" class="col-md-2">
-				<?php echo $this->sidebar; ?>
-			</div>
-			<div class="col-md-10">
+			<div class="col-md-12">
 				<div id="j-main-container" class="j-main-container">
 					<?php if (count($this->messages)) : ?>
 						<?php foreach ($this->messages as $message) : ?>
diff --git a/administrator/language/en-GB/en-GB.com_installer.ini b/administrator/language/en-GB/en-GB.com_installer.ini
index 1b9e9e191d49d..985575ca48742 100644
--- a/administrator/language/en-GB/en-GB.com_installer.ini
+++ b/administrator/language/en-GB/en-GB.com_installer.ini
@@ -203,13 +203,6 @@ COM_INSTALLER_PACKAGE_FILE="Package File"
 COM_INSTALLER_PREFERENCES_DESCRIPTION="Fine tune how extensions installation and updates work."
 COM_INSTALLER_PREFERENCES_LABEL="Preferences"
 COM_INSTALLER_REINSTALL_BUTTON="Reinstall"
-COM_INSTALLER_SUBMENU_DATABASE="Database"
-COM_INSTALLER_SUBMENU_DISCOVER="Discover"
-COM_INSTALLER_SUBMENU_INSTALL="Install"
-COM_INSTALLER_SUBMENU_LANGUAGES="Install Languages"
-COM_INSTALLER_SUBMENU_MANAGE="Manage"
-COM_INSTALLER_SUBMENU_UPDATE="Update"
-COM_INSTALLER_SUBMENU_UPDATESITES="Update Sites"
 COM_INSTALLER_SUBMENU_WARNINGS="Warnings"
 COM_INSTALLER_TITLE_DATABASE="Extensions: Database"
 COM_INSTALLER_TITLE_DISCOVER="Extensions: Discover"