SRAM X-Sync 2 Eagle Direct Mount Oval Chainring - 32 Tooth, 3mm Boost Offset, 12-Speed, BlackIntense study of chain and chainring wear patterns led to the radical tooth profile that lasts longer, runs quieter and further improves chain retention. Oval ring shape for riders that want to adjust the power profile of their pedal stroke. The only oval rings with X Sync 2 tooth design Item Specifications Chainline Hub Compatibility 141 148 Boost Hubs Defined Color Black Direct Mount Type Direct Mount SRAM Drivetrain Speeds 10 Drivetrain Speeds 11