From the manufacturer:
Superstar is the Monocoque Carbon Bicycle for the advanced amateur rider. Internal cable routing and compatibility with electronic groupsets from Shimano and Campagnolo. 25mm wheel clearance and the new Columbus Futura 1-1/8” – 1-1/2” fork.
The Superstar utilizes Internal PU Molds inside the head tube and bottom bracket during the carbon curing process. This technique increases the carbon fiber compression and lowers the amount of resin needed. In addition the possibility of air being trapped in the carbon structure is greatly reduced while guaranteeing minimal residue within the frame housing walls.