The new SRAM RED Exogram Crankset is completely hollow all the way to the spider. Its hidden bolt pattern makes better use of carbon fibre to further improve stiffness & shed weight. The stunning X Glide R chainrings are optimised for use with the YAW Technology in the front derailleur, delivering seamless, flawless performance. Exogram
Features: 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 optimised shifting performance with the Yaw front derailleur. The stiffer rings (5mm 7075-T6 aluminum 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 optimised performance.