The Shimano Dura Ace BB-7900 Bottom Bracket is a simple and straightforward component. You'll get two cups with low-drag, high-precision Dura Ace bearings, plus a cylindrical dust cover that mates the two cups. What's the difference between the Dura Ace BB-7900 bottom bracket and the previous... read more

The demand for ceramic bearings has grown so fervent that we spend less and less time explaining the benefits of going ceramic and far more time apologizing for hardly having anything in stock. We've rarely seen such a sustained period of demand outstripping supply. The reasons behind the ceramic... read more

These are the bearings and cups that thread into your frame for use with the Dura-Ace 10-Speed FC-7800 crankset. The bearings themselves will actually be outside of your frame, one reason why the 10-speed drivetrain rides with such sublime stiffness. Available for either English (68) or... read more

These are the bearings and cups that thread into your frame for use with the Ultegra SL 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... read more