Already a legend in its time, the SRAM RED Exogram Crankset is now available with refreshed graphics to compliment our new SRAM RED eTap componentry. The SRAM RED Exogram 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 Yaw compatibility, pair this crank with X-GlideR chainrings.Exogram™ technology uses a large, hollow cross section all the way to the spider, minimizing weight while maximizing stiffness.,Our stiffest crank ever,Hidden bolt pattern leverages the characteristics of carbon fiber while presenting a sleek appearance,Stiffer X-GlideR™ chainrings feature thicker construction and advanced shift timing pins and ramps, which are optimized for shifting with the Yaw™ Front Derailleur,ISO 4210 compliant..