Force22 Crank Set BB30 :The new Force 22 crankset delivers an upgrade in performance by utilizin gunidirectional carbon in the crank arm matched to a forged alloy spider.And, like RED, the hidden bolt pattern makes better use of carbon fiber to further improve stiffness and shed weight. The stunning X Glide R chainrings are optimized for use with the YAW Technology in the front derailleur, delivering seamless, flawless performance. It comes in fullsize and compact ratios and in multiple crank arm lengths..,Hidden bolt pattern leverages the characteristics of carbon fiber while presenting a sleek appearance.Stiffer X G lide R chainrings feature thicker construction, advanced shift timing pins and ramps, which are optimized for shifting with the Yaw Front Derailleur.New 165mm arm length option..,