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PRODUCT DESCRIPTION
Shimano Dura-Ace 7900 Bottom Bracket
Shimano's new Dura-Ace 7900 has finally arrived! Get the latest release of Shimano's premium grade components.
- Shell width: 68mm
- Thread dimensions: 1.37 x 24 TPI
- Weight: 90g
- Although not recommended by Shimano, this bottom bracket is backwards compatible with all out board hollowtech chainsets
- Also compatible with the following cranksets: Dura-Ace (7900/7800/7803), Ultegra/Ultegra-SL (6750/6703/6700/6650/6604/6603/6601/6600), 105 (5650/5603/5600), and R-series (R700/R600/R553/R550) HollowTech-II "HT2" road cranks
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