Campagnolo improved the design of its crankset by introducing the XPSS system.  Using the Extreme Performance Shifting System and a new teeth design, the new chainring profile allows for faster and more precise shifting whether you upshift or downshift. Campagnolo also uses a new chainring mounting system that's lighter with easier access for maintenance.  Campagnolo’s Ultra-Torque bottom bracket design to provide a stiff and solid system. The new Campagnolo Chorus Ultra-Torque crankset weighs 667 grams.  Designed to work with Campagnolo 11 speed drivetrain.