Carbon where it counts. They don't use carbon gratuitously in the seat stays. For 2008, they've redeveloped the Six13 for even better performance. The carbon tubes have taken a queue from its SystemSix brother... optimized for more explosive power transfer, while the inherent vibration damping qualities add a touch of comfort.

• BEST OF BOTH WORLDS - CARBON AND ALUMINUM ALL IN THE RIGHT PLACES. Cannondale's Six13 is bonded on precision aligned fixtures at our factory in Bedford, Pennsylvania, combining the raw efficiency of aluminum with the lightweight vibration damping of carbon fiber.