Eagle xx1 single chainset bb30 12 speed true competitors are always looking for a performance advantagea relentless pursuit of equipment that is lighter stiffer and stronger to create the best drivetrain possible we started with a completely reengineered crankset design our all new xx1 eagle crankset is the lightest stiffest and strongest on the market a special hollow internal architecture combined with our proprietary carbon tuned lay up allows us to build a lightweight and ultra e