The Sram Force 22 53/39 GXP Chainset delivers an upgrade in performance by utilizing unidirectional carbon in the crank arm matched to a forged alloy spider. &, like RED, the hidden bolt pattern makes better use of carbon fibre to further improve stiffness & 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 full-size & compact ratios & in multiple crank arm lengths.