Full carbon chainrings are available to your specification. They can be ordered in standard window style road chainrings or as a full aero chainring as per the picture. These chainrings have been tested for over 4000 miles and are still going strong! The fact that a lot of design and testing has gone in means you can order the rings as a single speed or in a double design, meaning outer rings can be ramped and pinned for use on a double set up!