Products RSS feed
The Products RSS feed web part can be used to create an RSS feed of products on your site. It uses a built-in products data source as a source of the products. It displays a link leading to the feed, which is located at the URL of the page where the web part is placed, with a querystring parameter appended.
The web part belongs to the Syndication module. Full documentation of the module can be found in Kentico CMS Developer's Guide -> Modules -> Syndication.