diff --git src/class-buddypress.php src/class-buddypress.php
index 979615621..2ad7747eb 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 array
+	 */
+	public $activity = array();
+
+	/**
+	 * Blogs component.
+	 *
+	 * @since 1.5.0
+	 * @var array
+	 */
+	public $blogs = array();
+
+	/**
+	 * Core component.
+	 *
+	 * @since 1.6.0
+	 * @var array
+	 */
+	public $core = array();
+
+	/**
+	 * Forums component.
+	 *
+	 * @since 1.5.0
+	 * @var array
+	 */
+	public $forums = array();
+
+	/**
+	 * Friends component.
+	 *
+	 * @since 1.6.0
+	 * @var array
+	 */
+	public $friends = array();
+
+	/**
+	 * Groups component.
+	 *
+	 * @since 1.5.0
+	 * @var array
+	 */
+	public $groups = array();
+
+	/**
+	 * Members component.
+	 *
+	 * @since 1.5.0
+	 * @var array
+	 */
+	public $members = array();
+
+	/**
+	 * Messages component.
+	 *
+	 * @since 1.5.0
+	 * @var array
+	 */
+	public $messages = array();
+
+	/**
+	 * Notifications component.
+	 *
+	 * @since 1.9.0
+	 * @var array
+	 */
+	public $notifications = array();
+
+	/**
+	 * Settings component.
+	 *
+	 * @since 1.6.0
+	 * @var array
+	 */
+	public $settings = array();
+
+	/**
+	 * XProfile component.
+	 *
+	 * @since 1.6.0
+	 * @var array
+	 */
+	public $profile = array();
+
 	/** Option Overload *******************************************************/

 	/**