The SRAM X-Sync 2 Direct Mount 3mm Offset Boost Cold Forged Aluminium Chainring is a direct result of SRAM drivetrain engineers studying the performance and wear characteristics of thousands of chainrings.Eagle™ Technology creates the smoothest, quietest, longest lasting and most efficient drivetrains SRAM have ever made. 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 X-Sync 2 Direct Mount 3mm Offset Boost Chainring FeaturesOnly Eagle™ drivetrains are system engineered to give every rider the ultimate 1x experience.The complete Eagle™ system — crankset, chainring, chain, shifter, derailleur and cassette — is designed, tested and proven to deliver the ultimate mountain bike drivetrain.Only Eagle™ offers the lightest, highest-performing, most durable system SRAM engineers, professional athletes and customers asked for.Only Eagle™ is capable of revolutionizing the ride for all riders on every kind of terrain.Eagle™ technology provides an expanded, optimum, gear range making you fast on the flats, giving you control on the climbs and unleashing your speed on the descents.X-SYNC™ 2 chainring design increases chain retention, wear life, and reduces friction and noise.Designed to be used with Eagle™ chain.SRAM X-Sync 2 Direct Mount 3mm Offset Boost Chainring SpecificationsChainring Size: 30, 32, 34Bolt Circle Diameter (BCD): Direct Mount (DM)Speeds: 12Material (Chainring): AluminiumColour (Chainring): BlackCompat - Yaw: No