The sram x01 eagle chain might look normal but the engineering inside this incredible new design makes possible a gear range previously found only in 2 chainring drivetrains it39s the biggest contributor to the eagle drivetrain39s ultra smooth precise durable and quiet performance the eagle chain39s links have a smooth radius with no sharp edges or chamfers which yield a significant reduction in noise friction and wear on chainrings and cassette cogs this design also allows for