This stunning model is specifically designed for use with road bikes & delivers outstanding acceleration & pedal stroke performance. Its hidden bolt pattern makes better use of carbon fibre to further improve stiffness & shed weight. Furthermore, the stunning X-Glide R chainrings are optimised for use with the Yaw Technology in the front derailleur, delivering seamless, flawless performance. To top it off, its amazing two-tone finish compliments any ride & looks as amazing as it performs. This is a perfect choice of a replacement for your old or worn-out existing model for breathing new life into your drivetrain. Technologies: Exogram: The new Hollow Carbon Construction starts in the crank arm & extends into the cranks’ spider. It maximizes the stiffness to weight ratio. X-Glide R Chainrings: The chainrings are designed for an optimized shifting performance with the Yaw front derailleur. The stiffer rings (5mm 7075-T6 aluminium CNC-machined) feature upshift rivets with an advanced design adopted from SRAM XX. CNC machining allows for precision control of each tooth shape, ramp, & nearly every shifting feature of the chainring. Chainrings, chain, & front derailleur are designed as a single integrated system for optimized performance.