Already a legend in its time the sram red crankset is now available with refreshed graphics to complement our new sram red etap componentry the sram red crankset features a completely hollow construction all the way to the spider its hidden bolt pattern makes better use of carbon fiber to further improve stiffness and shed weight as always for seamless flawless performance and yawtrade compatibility pair this crank with x glidertrade chainrings sram red crankset gxm 172 fea