Electronic shifting, silky smooth ride quality and lightweight performance. If your goal is riding faster and farther, the technologically advanced Z2 is your bike. The Ultra High Modulus carbon fiber frame blends classic racing geometry with some subtle enhancements to improve comfort. And the incredible Shimano Di2 electronic shifting brings performance componentry to a whole new level

Product Link:
http://www.feltbicycles.com/USA/2010-Product-Catalog/Road/Z-Series/Z2.aspx