With graphics to complement our 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. Exogramª technology uses a large, hollow cross section all the way to the spider, minimizing weight while maximizing stiffness. Hidden bolt pattern leverages the characteristics of carbon fiber while presenting a sleek appearance. X-GlideRª chainrings feature thicker construction and advanced shift timing pins and ramps, which are optimized for shifting with the Yawª front derailleur.