The Force 22 crankset delivers an upgrade in performance by utilizing unidirectional 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-GlideR™ chainrings are optimized for use with the Yaw technology in the front derailleur, delivering seamless, flawless performance. It comes in full size and compact ratios and in multiple crank arm lengths.Features:- Hidden bolt pattern- X-Glide™ chainrings- Optimized with Yaw™ front derailleur- ISO 4210 compliant.- See Declaration of Conformity for details.Specifications:- Speeds: 11- BB Compatibility: GXP/PF GXP 68/73mm- Chainring Size: 53/39- Crank arm length: 165mm- Chainline: 45.0mm- BB Spindle Interface: 24mm- Chainring material: Aluminum/Aluminum- Guard: No Guard- Bolt Circle Diameter (BCD): 130 BCD- Crank arm material: Carbon