diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3dc9771e..6765151c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,14 @@
 master
 ------
 
+* Extract `include_ember_*_tags` and the associated code to the
+  `ember-cli-rails-assets` gem. Add `ember-cli-rails-assets` as a dependency.
+  [#363]
 * Introduce `mount_ember_assets` to serve Ember assets in asset-helper style
   projects.
 
+[#363]: https://github.com/thoughtbot/ember-cli-rails/pull/363
+
 0.6.0
 -----
 
diff --git a/app/helpers/ember_rails_helper.rb b/app/helpers/ember_rails_helper.rb
index f63733d5..ec103480 100644
--- a/app/helpers/ember_rails_helper.rb
+++ b/app/helpers/ember_rails_helper.rb
@@ -1,5 +1,4 @@
 require "html_page/capture"
-require "ember_cli/assets"
 
 module EmberRailsHelper
   def render_ember_app(name, &block)
@@ -11,24 +10,4 @@ def render_ember_app(name, &block)
 
     render inline: EmberCli[name].index_html(head: head, body: body)
   end
-
-  def include_ember_script_tags(name, **options)
-    EmberCli[name].build
-
-    assets = EmberCli::Assets.new(EmberCli[name])
-
-    assets.javascript_assets.
-      map { |src| %{<script src="#{src}"></script>}.html_safe }.
-      reduce(&:+)
-  end
-
-  def include_ember_stylesheet_tags(name, **options)
-    EmberCli[name].build
-
-    assets = EmberCli::Assets.new(EmberCli[name])
-
-    assets.stylesheet_assets.
-      map { |src| %{<link rel="stylesheet" href="#{src}">}.html_safe }.
-      reduce(&:+)
-  end
 end
diff --git a/ember-cli-rails.gemspec b/ember-cli-rails.gemspec
index 17164abd..68c95f7c 100644
--- a/ember-cli-rails.gemspec
+++ b/ember-cli-rails.gemspec
@@ -15,6 +15,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.1.0"
 
+  spec.add_dependency "ember-cli-rails-assets", ">= 0.6.1"
   spec.add_dependency "railties", ">= 3.2", "< 5"
   spec.add_dependency "cocaine", "~> 0.5.8"
   spec.add_dependency "html_page", "~> 0.1.0"
diff --git a/lib/ember-cli-rails.rb b/lib/ember-cli-rails.rb
index f9d1e02f..53c8e55c 100644
--- a/lib/ember-cli-rails.rb
+++ b/lib/ember-cli-rails.rb
@@ -1,5 +1,6 @@
 require "fileutils"
-require "ember_cli/engine" if defined?(Rails)
+require "ember_cli/engine"
+require "ember-cli-rails-assets"
 require "ember_cli/errors"
 
 module EmberCli
diff --git a/lib/ember_cli/app.rb b/lib/ember_cli/app.rb
index 065c5258..965d3de7 100644
--- a/lib/ember_cli/app.rb
+++ b/lib/ember_cli/app.rb
@@ -24,10 +24,14 @@ def initialize(name, **options)
       @build = BuildMonitor.new(name, @paths)
     end
 
-    def root
+    def root_path
       paths.root
     end
 
+    def dist_path
+      paths.dist
+    end
+
     def compile
       @compiled ||= begin
         prepare
diff --git a/lib/ember_cli/asset_map.rb b/lib/ember_cli/asset_map.rb
deleted file mode 100644
index d9209bb1..00000000
--- a/lib/ember_cli/asset_map.rb
+++ /dev/null
@@ -1,64 +0,0 @@
-require "ember_cli/errors"
-
-module EmberCli
-  class AssetMap
-    def initialize(ember_app_name:, asset_map:)
-      @ember_app_name = ember_app_name
-      @asset_map = asset_map
-    end
-
-    def javascripts
-      assert_asset_map!
-
-      [
-        asset_matching(%r{vendor(.*)\.js\z}),
-        asset_matching(%r{#{ember_app_name}(.*)\.js\z}),
-      ]
-    end
-
-    def stylesheets
-      assert_asset_map!
-
-      [
-        asset_matching(%r{vendor(.*)\.css\z}),
-        asset_matching(%r{#{ember_app_name}(.*)\.css\z}),
-      ]
-    end
-
-    private
-
-    attr_reader :app_name, :ember_app_name, :asset_map
-
-    def asset_matching(regex)
-      matching_asset = files.detect { |asset| asset =~ regex }
-
-      if matching_asset.blank?
-        raise_missing_asset(regex)
-      end
-
-      prepend + matching_asset
-    end
-
-    def prepend
-      asset_map["prepend"].to_s
-    end
-
-    def files
-      Array(assets.values)
-    end
-
-    def assets
-      asset_map["assets"] || {}
-    end
-
-    def raise_missing_asset(regex)
-      raise BuildError.new("Failed to find assets matching `#{regex}`")
-    end
-
-    def assert_asset_map!
-      if assets.empty?
-        raise BuildError.new("Missing `#{ember_app_name}/assets/assetMap.json`")
-      end
-    end
-  end
-end
diff --git a/lib/ember_cli/assets.rb b/lib/ember_cli/assets.rb
deleted file mode 100644
index d571715b..00000000
--- a/lib/ember_cli/assets.rb
+++ /dev/null
@@ -1,51 +0,0 @@
-require "ember_cli/errors"
-require "ember_cli/asset_map"
-require "ember_cli/directory_asset_map"
-
-module EmberCli
-  class Assets
-    def initialize(app)
-      @app = app
-    end
-
-    def javascript_assets
-      asset_map.javascripts
-    end
-
-    def stylesheet_assets
-      asset_map.stylesheets
-    end
-
-    private
-
-    attr_reader :app
-
-    def asset_map
-      AssetMap.new(
-        ember_app_name: ember_app_name,
-        asset_map: asset_map_hash.to_h,
-      )
-    end
-
-    def asset_map_file
-      app.paths.asset_map
-    end
-
-    def asset_map_hash
-      if asset_map_file.present? && asset_map_file.exist?
-        JSON.parse(asset_map_file.read)
-      else
-        DirectoryAssetMap.new(app.paths.assets)
-      end
-    end
-
-    def ember_app_name
-      @ember_app_name ||= app.options.fetch(:name) { package_json.fetch(:name) }
-    end
-
-    def package_json
-      @package_json ||=
-        JSON.parse(app.paths.package_json_file.read).with_indifferent_access
-    end
-  end
-end
diff --git a/lib/ember_cli/directory_asset_map.rb b/lib/ember_cli/directory_asset_map.rb
deleted file mode 100644
index 8a9c5d93..00000000
--- a/lib/ember_cli/directory_asset_map.rb
+++ /dev/null
@@ -1,30 +0,0 @@
-module EmberCli
-  class DirectoryAssetMap
-    def initialize(directory)
-      @directory = Pathname(directory)
-    end
-
-    def to_h
-      {
-        "assets" => files_with_data,
-        "prepend" => "assets/",
-      }
-    end
-
-    def files_with_data
-      files.reduce({}) do |manifest, file|
-        name = File.basename(file.path)
-
-        manifest[name] = name
-
-        manifest
-      end
-    end
-
-    private
-
-    def files
-      @directory.children.map { |path| File.new(path) }
-    end
-  end
-end
diff --git a/lib/ember_cli/path_set.rb b/lib/ember_cli/path_set.rb
index b77f6c9f..f85c60fa 100644
--- a/lib/ember_cli/path_set.rb
+++ b/lib/ember_cli/path_set.rb
@@ -34,22 +34,10 @@ def dist
       @dist ||= ember_cli_root.join("apps", app_name).tap(&:mkpath)
     end
 
-    def asset_map
-      @asset_map ||= Pathname.glob(assets.join("assetMap*.json")).first
-    end
-
-    def assets
-      @assets ||= dist.join("assets").tap(&:mkpath)
-    end
-
     def gemfile
       @gemfile ||= root.join("Gemfile")
     end
 
-    def package_json_file
-      @package_json_file ||= root.join("package.json")
-    end
-
     def ember
       @ember ||= begin
         root.join("node_modules", ".bin", "ember").tap do |path|
diff --git a/lib/ember_cli/route_helpers.rb b/lib/ember_cli/route_helpers.rb
index 18e4db77..f20f8639 100644
--- a/lib/ember_cli/route_helpers.rb
+++ b/lib/ember_cli/route_helpers.rb
@@ -3,12 +3,6 @@
 module ActionDispatch
   module Routing
     class Mapper
-      def mount_ember_assets(app_name, to: "/")
-        dist_directory = EmberCli[app_name].paths.dist
-
-        mount Rack::File.new(dist_directory.to_s) => to
-      end
-
       def mount_ember_app(app_name, to:, **options)
         routing_options = options.deep_merge(
           defaults: { ember_app: app_name },
@@ -25,7 +19,9 @@ def mount_ember_app(app_name, to:, **options)
             get("#{to}(*rest)", routing_options)
           end
 
-          mount_ember_assets app_name, to: to
+          dist_directory = EmberCli[app_name].paths.dist
+
+          mount Rack::File.new(dist_directory.to_s) => to
         end
       end
     end
diff --git a/lib/generators/ember/heroku/heroku_generator.rb b/lib/generators/ember/heroku/heroku_generator.rb
index 66fc59fd..8148dc39 100644
--- a/lib/generators/ember/heroku/heroku_generator.rb
+++ b/lib/generators/ember/heroku/heroku_generator.rb
@@ -19,7 +19,7 @@ def inject_12factor_gem
 
     def app_paths
       EmberCli.apps.values.map do |app|
-        app.root.relative_path_from(Rails.root)
+        app.root_path.relative_path_from(Rails.root)
       end
     end
   end
diff --git a/spec/lib/ember_cli/app_spec.rb b/spec/lib/ember_cli/app_spec.rb
index a3094af6..de094834 100644
--- a/spec/lib/ember_cli/app_spec.rb
+++ b/spec/lib/ember_cli/app_spec.rb
@@ -17,17 +17,33 @@
     end
   end
 
-  describe "#root" do
+  describe "#root_path" do
     it "delegates to PathSet" do
       root_path = Pathname(".")
-      allow_any_instance_of(EmberCli::PathSet).
-        to receive(:root).
-        and_return(root_path)
+      stub_paths(root: root_path)
       app = EmberCli::App.new("foo")
 
-      root = app.root
+      root_path = app.root_path
 
-      expect(root).to eq root_path
+      expect(root_path).to eq root_path
     end
   end
+
+  describe "#dist_path" do
+    it "delegates to PathSet" do
+      dist_path = Pathname(".")
+      stub_paths(dist: dist_path)
+      app = EmberCli::App.new("foo")
+
+      dist_path = app.dist_path
+
+      expect(dist_path).to eq dist_path
+    end
+  end
+
+  def stub_paths(method_to_value)
+    allow_any_instance_of(EmberCli::PathSet).
+      to receive(method_to_value.keys.first).
+      and_return(method_to_value.values.first)
+  end
 end
diff --git a/spec/lib/ember_cli/asset_map_spec.rb b/spec/lib/ember_cli/asset_map_spec.rb
deleted file mode 100644
index 3aa073c4..00000000
--- a/spec/lib/ember_cli/asset_map_spec.rb
+++ /dev/null
@@ -1,77 +0,0 @@
-require "ember_cli/asset_map"
-
-describe EmberCli::AssetMap do
-  describe "#javascripts" do
-    it "includes the most recent javascript build artifacts" do
-      asset_map = {
-        "assets" => {
-          "not-a-match" => {},
-          "bar.js" => "bar-abc123.js",
-          "vendor.js" => "vendor-abc123.js",
-        },
-        "prepend" => "foo/",
-      }
-      assets = build_assets(
-        ember_app_name: "bar",
-        asset_map: asset_map,
-      )
-
-      javascripts = assets.javascripts
-
-      expect(javascripts).to match_array([
-        "foo/bar-abc123.js",
-        "foo/vendor-abc123.js",
-      ])
-    end
-
-    context "when the asset_map is empty" do
-      it "raises a BuildError" do
-        assets = build_assets(
-          asset_map: {},
-          ember_app_name: "bar",
-        )
-
-        expect { assets.javascripts }.to raise_error(EmberCli::BuildError)
-      end
-    end
-  end
-
-  describe "#stylesheets" do
-    it "includes the most recent stylesheet build artifacts" do
-      asset_map = {
-        "assets" => {
-          "not-a-match" => {},
-          "bar.css" => "bar-abc123.css",
-          "vendor.css" => "vendor-abc123.css",
-        },
-        "prepend" => "foo/",
-      }
-      assets = build_assets(
-        ember_app_name: "bar",
-        asset_map: asset_map,
-      )
-
-      stylesheets = assets.stylesheets
-
-      expect(stylesheets).to match_array([
-        "foo/bar-abc123.css",
-        "foo/vendor-abc123.css",
-      ])
-    end
-
-    context "when the asset_map is empty" do
-      it "raises a BuildError" do
-        assets = build_assets(
-          asset_map: {},
-          ember_app_name: "bar",
-        )
-
-        expect { assets.stylesheets }.to raise_error(EmberCli::BuildError)
-      end
-    end
-  end
-end
-
-def build_assets(asset_map: {}, **options)
-  EmberCli::AssetMap.new(options.merge(asset_map: asset_map))
-end
diff --git a/spec/lib/ember_cli/directory_asset_map_spec.rb b/spec/lib/ember_cli/directory_asset_map_spec.rb
deleted file mode 100644
index 290b178d..00000000
--- a/spec/lib/ember_cli/directory_asset_map_spec.rb
+++ /dev/null
@@ -1,34 +0,0 @@
-require "tmpdir"
-require "fileutils"
-require "ember_cli/directory_asset_map"
-
-describe EmberCli::DirectoryAssetMap do
-  describe "#to_h" do
-    it "represents the directory" do
-      create_file("first")
-      create_file("second")
-      create_file("third")
-
-      directory_manifest = EmberCli::DirectoryAssetMap.new(directory).to_h
-
-      expect(directory_manifest["prepend"]).to eq("assets/")
-      expect(directory_manifest["assets"]).to match a_hash_including(
-        "first" => "first",
-        "second" => "second",
-        "third" => "third",
-      )
-    end
-  end
-
-  def create_file(name)
-    path = directory.join(name)
-
-    FileUtils.touch(path)
-
-    File.new(path)
-  end
-
-  def directory
-    @directory ||= Pathname(Dir.mktmpdir)
-  end
-end
diff --git a/spec/lib/ember_cli/path_set_spec.rb b/spec/lib/ember_cli/path_set_spec.rb
index d0265426..292a962f 100644
--- a/spec/lib/ember_cli/path_set_spec.rb
+++ b/spec/lib/ember_cli/path_set_spec.rb
@@ -63,29 +63,6 @@
     end
   end
 
-  describe "#asset_map" do
-    it "globs the dist directory for a asset_map.json" do
-      app = build_app(name: "foo")
-      path_set = build_path_set(app: app)
-      asset_map_file = path_set.dist.join("assets", "assetMap-abc123.json")
-
-      create_file(asset_map_file)
-
-      expect(path_set.asset_map).to exist
-      expect(path_set.asset_map).to eq(asset_map_file)
-    end
-  end
-
-  describe "#assets" do
-    it "is a child of #dist" do
-      app = build_app(name: "foo")
-      path_set = build_path_set(app: app)
-
-      expect(path_set.assets).to exist
-      expect(path_set.assets).to eq ember_cli_root.join("apps", "foo", "assets")
-    end
-  end
-
   describe "#gemfile" do
     it "is a child of #root" do
       app = build_app(name: "foo")
@@ -96,15 +73,6 @@
     end
   end
 
-  describe "#package_json_file" do
-    it "is a child of #root" do
-      path_set = build_path_set
-
-      expect(path_set.package_json_file)
-        .to eq path_set.root.join("package.json")
-    end
-  end
-
   describe "#lockfile" do
     it "is a child of #tmp" do
       path_set = build_path_set