All carbon frames… Carbon frames are stock with the 4.6 and 6.0 wings. The 5.5 Speed comes stock with carbon front tubes. Carbon frames may also be purchased to upgrade any wing. Call Charlie or Steve to negotiate details.
More about carbon frames: Carbon is light weight and stiff. However it is not as durable as aluminum. A stiffer carbon front tube deflects less under wing loads. A lighter carbon frame allows the wing to fly its own weight in less velocity. Stiffer and lighter wings a are a significant performance upgrade.
There is a compromise: carbon is not as durable as aluminum. Pavement sailors should stick to aluminum cross tubes and boom/Y tube set ups. The carbon tubes abrade very easily if they are mishandled on pavement.
Light weight carbon X tubes are a significant weight saving. However, folks who want to jump or fly off the surface with a wing should use a re enforced X tube.