SRAM 1x� road 10-speed and 11-speed compatible Patented X-Sync� chainring technology provides unparalleled chain retention as part of a complete SRAM 1x� system Integrated 4-arm, asymmetric spider maximizes stiffness to weight Compatible with 130 and 135/142 OLD frames Aluminum chainring and crankarms 175x42 BB30 BLK 110x4B 1130g 1x10/11UPC/EAN/GTIN: 710845796531