Shimano Ultegra BB-6700 Bottom Bracket

These are the bearings and cups that thread into your frame for use with the Shimano Ultegra 6700 crankset. The bearings themselves will actually be outside of your frame, one reason why the 10-speed drivetrain rides with such sublime stiffness. This unit is compatible with both Double and Triple Ultegra cranksets. Available for either English (68) or Italian (70) threading.