Completely new design by the Campy Tech Lab™ engineers to create the ultimate 10 speed crankset that’s easy to maintain, lightweight, and retains the same U and Q factors of its "big brother" Ultra-Torque™.- New teeth design increases efficiency of chain shifts up and down the rings- M.P.S.™ chainrings for accurate and fast shifting- Carbon-fibre reduces weight for racing- Lighter cranks reduces weight- New Power Torque System™ bottom bracket allows easy assembly, efficient power transmission and fast operation- Weight: 644g