The old saying if it ain't brook don't fix it, well Crank Brothers jus bumped up another notch on head sets ! In this headset the bearings and cups are one. This 65-gram directset has easy-to-clean identical upper and lower bearings with 28 balls in each and a stack height of 20.6 millimeters. Crankbrothers is so confident in this design that it gave this cross country headset a 5-year warranty.