Eagle Technology creates the smoothest, quietest, longest lasting and most efficient drivetrains SRAm have ever made. The radical new look and feel of our X-SYNC 2 Eagle chainring is a direct result of SRAM drivetrain engineers studying the performance and wear characteristics of thousands of X-SYNC chainrings. The longer, positive-rake tooth shape has been designed to work perfectly with the new Eagle chain to increase chain retention and overall pedalling efficiency, while decreasing friction, noise and wear. SRAM oval X-Sync 2 chainring for cranks with SRAM direct mount fitting Works with all Eagle 12 speed drivetrains Oval chainrings increase power output by smoothing out power delivery from pedalling Noticeable improvements can especially be noticed over technical terrains X-SYNC 2 chainring design increases chain retention, wear life, and reduces friction and noise. Designed to be used with Eagle chains 32T 3mm boost spacing