Dura Ace 7900 Bottom Bracket
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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 generation BB-7800? The primary change is in the bearing seals -- they have a new design to reduce drag, to create smoother rotation, and to add durability. Available for either English (68) or Italian (70) threading.
- Material
- aluminum
- Threading
- English, Italian
- Shell Width
- 68 mm 73 mm
- Claimed Weight
- 100 g
- Recommended Use
- cycling
- Manufacturer Warranty
- 1 year
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