The Shimano Dura-Ace 7900 Hollowtech II bottom bracket offers a wider bearing space for superior stability and an improved seal design for longer durability. Wide bearing spacing - Superior stability Improved seal design - Smooth rotation and long-term...
Features Super power transmission Optimum balance of lightweight and rigidity Q-factor remains same as FC-7701/BB-7700 Minimal bearing interface for smoother rolling Reference the FC-7800 for Service Instructions. Specifications Model No. SM-FC7800...
The Shimano Ultegra 6700 Bottom Bracket has wider bearing spacing for greater stability. In addition the seal design was improved to provide smoother rotation and longer durability. Wide bearing spacing - Superior stability Improved seal design -...