SRAM 1x road 10-speed and 11-speed compatible 24 and 30mm BB compatibilities, offered in GXP, BB30, Press Fit 30, and PFGXP Compatible with 130 and 135 OLD Lightweight carbon arms with detachable spider X-SYNC chain ring-an integral component of the SRAM 1x drivetrain Taking its aim from the hugely successful CX1 groupset, SRAM's Force 1 GXP Crankset retains the cyclocross specific benefits of CX1 and matures them into a fully capable and multidiscipline concept. Force 1 moves your riding in the direction of pure bliss, rewarding you with smoother and cleaner chain lines and greater chain retention. It also removes the annoyance of front derailleur shifting and chain-rub noise.SRAM achieves one-by bliss with its X-SYNC chain ring, which features tall, narrow teeth that encourages the chain to catch sooner and more securely while shedding any mud you encounter on your adventure. Whether you are cyclocross and gravel-specific or a time-trial enthusiast, crankarm options include both a 110mm and a 130mm BCD option to accommodate a wide range of chainring sizes.