Innovation often comes from places youd least expect in order to make a lighter crankset sram made it bigger to add stiffness sram have used less material 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 and shed weight the stunning x glide r chainrings are optimised for use with the yaw technology in the front derailleur delivering seamless flawless performance exogr