The radical look and feel of X-SYNC 2 Eagle chainrings is a direct result of SRAM drivetrain engineers studying the performance and wear characteristics of thousands of X-SYNC chainrings. Longer, positive-rake tooth shape has been designed to work perfectly with Eagle chains to increase chain retention and overall pedaling efficiency, while decreasing friction, noise and wear. 104mm BCD for use with XX1 Eagle Quarq power meter cranks SRAM Model ID: CR-XSNC-104-B1 
