diff --git src/class-buddypress.php src/class-buddypress.php
index 979615621..5480adb24 100644
--- src/class-buddypress.php
+++ src/class-buddypress.php
@@ -85,6 +85,94 @@ class BuddyPress {
 	 */
 	public $do_autoload = true;

+	/**
+	 * Activity component.
+	 *
+	 * @since 1.6.0
+	 * @var BP_Activity_Component
+	 */
+	public $activity = array();
+
+	/**
+	 * Blogs component.
+	 *
+	 * @since 1.5.0
+	 * @var BP_Blogs_Component
+	 */
+	public $blogs = array();
+
+	/**
+	 * Core component.
+	 *
+	 * @since 1.6.0
+	 * @var BP_Core
+	 */
+	public $core = array();
+
+	/**
+	 * Forums component.
+	 *
+	 * @since 1.5.0
+	 * @var BP_Forums_Component
+	 */
+	public $forums = array();
+
+	/**
+	 * Friends component.
+	 *
+	 * @since 1.6.0
+	 * @var BP_Friends_Component
+	 */
+	public $friends = array();
+
+	/**
+	 * Groups component.
+	 *
+	 * @since 1.5.0
+	 * @var BP_Groups_Component
+	 */
+	public $groups = array();
+
+	/**
+	 * Members component.
+	 *
+	 * @since 1.5.0
+	 * @var BP_Members_Component
+	 */
+	public $members = array();
+
+	/**
+	 * Messages component.
+	 *
+	 * @since 1.5.0
+	 * @var BP_Messages_Component
+	 */
+	public $messages = '';
+
+	/**
+	 * Notifications component.
+	 *
+	 * @since 1.9.0
+	 * @var BP_Notifications_Component
+	 */
+	public $notifications = array();
+
+	/**
+	 * Settings component.
+	 *
+	 * @since 1.6.0
+	 * @var BP_Settings_Component
+	 */
+	public $settings = array();
+
+	/**
+	 * XProfile component.
+	 *
+	 * @since 1.6.0
+	 * @var BP_XProfile_Component
+	 */
+	public $profile = array();
+
 	/** Option Overload *******************************************************/

 	/**