11-speed road crankset Carbon arms w/ alloy spider minimizes weight while maximizing stiffness. Hidden bolt pattern leverages the characteristics of carbon fiber while presenting a sleek appearance. Stiffer 11 speed X GlideR chainrings feature thicker construction, advanced shift timing pins and ramps, which are optimized for shifting with the 11 speed YAW front derailleur. Does not include BB30 or PF30 BB Weights include BlackBox Ceramic BB 170x50-34 BB30 CRBN 110x5B 740g 2x11