diff --git a/app/assets/javascripts/discourse/components/radio_button.js b/app/assets/javascripts/discourse/components/radio_button.js
new file mode 100644
index 00000000000..1817064c94d
--- /dev/null
+++ b/app/assets/javascripts/discourse/components/radio_button.js
@@ -0,0 +1,13 @@
+Discourse.RadioButton = Ember.Component.extend({
+  tagName : "input",
+  type : "radio",
+  attributeBindings : [ "name", "type", "value", "checked:checked" ],
+  click : function() {
+    this.set("selection", this.$().val());
+  },
+  checked : function() {
+    return this.get("value") === this.get("selection");
+  }.property('selection')
+});
+
+Em.Handlebars.helper('radio-button', Discourse.RadioButton);
diff --git a/app/assets/javascripts/discourse/controllers/bulk_notification_level_controller.js b/app/assets/javascripts/discourse/controllers/bulk_notification_level_controller.js
new file mode 100644
index 00000000000..60fb2a87092
--- /dev/null
+++ b/app/assets/javascripts/discourse/controllers/bulk_notification_level_controller.js
@@ -0,0 +1,44 @@
+/**
+  Support for changing the notification level of various topics
+
+  @class BulkNotificationLevelControler
+  @extends Ember.Controller
+  @namespace Discourse
+  @module Discourse
+**/
+Discourse.BulkNotificationLevelController = Em.Controller.extend({
+  needs: ['topicBulkActions', 'discoveryTopics'],
+
+  notificationLevelId: null,
+
+  notificationLevels: function() {
+    var result = [];
+    Object.keys(Discourse.Topic.NotificationLevel).forEach(function(k) {
+      result.push({
+        id: Discourse.Topic.NotificationLevel[k].toString(),
+        name: I18n.t('topic.notifications.' + k.toLowerCase() + ".title"),
+        description: I18n.t('topic.notifications.' + k.toLowerCase() + ".description")
+      });
+    });
+    return result;
+  }.property(),
+
+  disabled: Em.computed.empty("notificationLevelId"),
+
+  actions: {
+    changeNotificationLevel: function() {
+      var self = this;
+
+      this.get('controllers.topicBulkActions').perform({
+        type: 'change_notification_level',
+        notification_level_id: this.get('notificationLevelId')
+      }).then(function(topics) {
+        if (topics) {
+          // Tell current route to reload
+          self.get('controllers.discoveryTopics').send('refresh');
+          self.send('closeModal');
+        }
+      });
+    }
+  }
+});
diff --git a/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js b/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js
index 1b90f5831f5..8447491dd2b 100644
--- a/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js
+++ b/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js
@@ -46,6 +46,10 @@ Discourse.TopicBulkActionsController = Ember.ArrayController.extend(Discourse.Mo
       this.set('controllers.modal.modalClass', 'topic-bulk-actions-modal full');
     },
 
+    showNotificationLevel: function() {
+      this.send('changeBulkTemplate', 'modal/bulk_notification_level');
+    },
+
     closeTopics: function() {
       this.forEachPerformed({type: 'close'}, function(t) {
         t.set('closed', true);
diff --git a/app/assets/javascripts/discourse/models/topic.js b/app/assets/javascripts/discourse/models/topic.js
index d46f1eb1d79..dbbc5d16fe0 100644
--- a/app/assets/javascripts/discourse/models/topic.js
+++ b/app/assets/javascripts/discourse/models/topic.js
@@ -313,7 +313,7 @@ Discourse.Topic.reopenClass({
     WATCHING: 3,
     TRACKING: 2,
     REGULAR: 1,
-    MUTE: 0
+    MUTED: 0
   },
 
   createActionSummary: function(result) {
diff --git a/app/assets/javascripts/discourse/routes/discovery_route.js b/app/assets/javascripts/discourse/routes/discovery_route.js
index f9ef0695fd9..15a1df58386 100644
--- a/app/assets/javascripts/discourse/routes/discovery_route.js
+++ b/app/assets/javascripts/discourse/routes/discovery_route.js
@@ -31,7 +31,10 @@ Discourse.DiscoveryRoute = Discourse.Route.extend(Discourse.OpenComposer, {
     },
 
     changeBulkTemplate: function(w) {
-      this.render(w, {into: 'topicBulkActions', outlet: 'bulkOutlet', controller: 'topicBulkActions'});
+      var controllerName = w.replace('modal/', ''),
+          factory = this.container.lookupFactory('controller:' + controllerName);
+
+      this.render(w, {into: 'topicBulkActions', outlet: 'bulkOutlet', controller: factory ? controllerName : 'topicBulkActions'});
     },
 
     showBulkActions: function() {
diff --git a/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars b/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars
index e17be58e3ad..0ae6fc38d1e 100644
--- a/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars
+++ b/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars
@@ -1,2 +1,3 @@
 <button class='btn' {{action showChangeCategory}}>{{i18n topics.bulk.change_category}}</button>
 <button class='btn' {{action closeTopics}}>{{i18n topics.bulk.close_topics}}</button>
+<button class='btn' {{action showNotificationLevel}}>{{i18n topics.bulk.notification_level}}</button>
diff --git a/app/assets/javascripts/discourse/templates/modal/bulk_notification_level.js.handlebars b/app/assets/javascripts/discourse/templates/modal/bulk_notification_level.js.handlebars
new file mode 100644
index 00000000000..2dad1a349e5
--- /dev/null
+++ b/app/assets/javascripts/discourse/templates/modal/bulk_notification_level.js.handlebars
@@ -0,0 +1,10 @@
+{{#each level in notificationLevels}}
+  <div class='controls'>
+    <label class='radio'>
+      {{radio-button value=level.id name="notification_level" selection=controller.notificationLevelId}} <strong>{{unbound level.name}}</strong>
+      <div class='description'>{{{unbound level.description}}}</div>
+    </label>
+  </div>
+{{/each}}
+
+<button class='btn' {{bind-attr disabled="disabled"}} {{action changeNotificationLevel}}>{{i18n topics.bulk.notification_level}}</button>
diff --git a/app/assets/javascripts/discourse/views/buttons/notifications_button.js b/app/assets/javascripts/discourse/views/buttons/notifications_button.js
index ef63571bae7..a6978095e0c 100644
--- a/app/assets/javascripts/discourse/views/buttons/notifications_button.js
+++ b/app/assets/javascripts/discourse/views/buttons/notifications_button.js
@@ -23,7 +23,7 @@ Discourse.NotificationsButton = Discourse.DropdownButtonView.extend({
       ['WATCHING', 'watching'],
       ['TRACKING', 'tracking'],
       ['REGULAR', 'regular'],
-      ['MUTE', 'muted']
+      ['MUTED', 'muted']
     ], function(pair) {
 
       if (postfix === '_pm' && pair[1] === 'regular') { return; }
@@ -42,7 +42,7 @@ Discourse.NotificationsButton = Discourse.DropdownButtonView.extend({
       switch (this.get('topic.details.notification_level')) {
         case Discourse.Topic.NotificationLevel.WATCHING: return 'watching';
         case Discourse.Topic.NotificationLevel.TRACKING: return 'tracking';
-        case Discourse.Topic.NotificationLevel.MUTE: return 'muted';
+        case Discourse.Topic.NotificationLevel.MUTED: return 'muted';
         default: return 'regular';
       }
     }).call(this);
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index cb0ac26b981..db9f1095fc1 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -627,6 +627,7 @@ en:
         actions: "Bulk Actions"
         change_category: "Change Category"
         close_topics: "Close Topics"
+        notification_level: "Change Notification Level"
         selected:
           one: "You have selected <b>1</b> topic."
           other: "You have selected <b>{{count}}</b> topics."
diff --git a/lib/topics_bulk_action.rb b/lib/topics_bulk_action.rb
index 85d9a739699..5e31dc6ca6c 100644
--- a/lib/topics_bulk_action.rb
+++ b/lib/topics_bulk_action.rb
@@ -8,7 +8,7 @@ class TopicsBulkAction
   end
 
   def self.operations
-    %w(change_category close)
+    %w(change_category close change_notification_level)
   end
 
   def perform!
@@ -27,6 +27,15 @@ class TopicsBulkAction
       end
     end
 
+    def change_notification_level
+      topics.each do |t|
+        if guardian.can_see?(t)
+          TopicUser.change(@user, t.id, notification_level: @operation[:notification_level_id].to_i)
+          @changed_ids << t.id
+        end
+      end
+    end
+
     def close
       topics.each do |t|
         if guardian.can_moderate?(t)
diff --git a/spec/components/topics_bulk_action_spec.rb b/spec/components/topics_bulk_action_spec.rb
index 84233d57aa1..23637e40d58 100644
--- a/spec/components/topics_bulk_action_spec.rb
+++ b/spec/components/topics_bulk_action_spec.rb
@@ -38,6 +38,29 @@ describe TopicsBulkAction do
     end
   end
 
+  describe "change_notification_level" do
+    let(:topic) { Fabricate(:topic) }
+
+    context "when the user can edit the topic" do
+      it "updates the notification level" do
+        tba = TopicsBulkAction.new(topic.user, [topic.id], type: 'change_notification_level', notification_level_id: 2)
+        topic_ids = tba.perform!
+        topic_ids.should == [topic.id]
+        TopicUser.get(topic, topic.user).notification_level.should == 2
+      end
+    end
+
+    context "when the user can't edit the topic" do
+      it "doesn't change the level" do
+        Guardian.any_instance.expects(:can_see?).returns(false)
+        tba = TopicsBulkAction.new(topic.user, [topic.id], type: 'change_notification_level', notification_level_id: 2)
+        topic_ids = tba.perform!
+        topic_ids.should == []
+        TopicUser.get(topic, topic.user).should be_blank
+      end
+    end
+  end
+
   describe "close" do
     let(:topic) { Fabricate(:topic) }