Felt Z-series carbon frame.
The Felt Z-Series carbon frame compared to a more traditional frame (transparent outline).

Felt's Z-Series frames are built around a relaxed, compact geometry that's light, comfortable, stable and ready to go as fast as you want. The taller head tube allows a more upright riding position, while the longer wheelbase as well as the less aggressive head- and seat-tube angles deliver stability and confident handling. All the frame tubes are size specific, too, ensuring an optimal ride for every cyclist. Plus, Felt's Integrated Bridge Technology allows shorter chainstays that directly join the large-radius bottom-bracket shell for optimal stiffness and power transfer, while Felt's smooth-blended mono seatstay adds strength and comfort.