Sram: THE NEXT EVOLUTION OF X-SYNC TECHNOLOGY The radical new look and feel of the X-SYNC 2 chainring is a direct result of SRAM drivetrain engineers studying the performance and wear characteristics of thousands of X-SYNC chainrings. The aggressive tooth design provides better chain retention for a smoother, more efficient pedal feel. With a focus on long wear-life, the X-SYNC 2 design reduces friction and the accumulation of mud, grit and grime. THINGS TO REMEMBERCompatible with 11- and 12-speed drivetrains. Designed specifically for Eagle chains and drivetrains. X-SYNC 2 design increases chain retention and wear life, and reduces friction and noise. SPECIFICATIONSChainring Size: 30Bolt Circle Diameter (BCD): 94 BCDSpeeds: 12Material (Chainring): AluminumColor (Chainring): BlackCompat - Yaw: n/a