Superfly 100: Trek Madone-style direct set bottom bracket bearings require no threads or metal in the BB shell.
- By VeloNews.com
- Published May. 30, 2009
Superfly 100: Trek Madone-style direct set bottom bracket bearings require no threads or metal in the BB shell. | Photo: Zack Vestal
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Superfly 100: Trek Madone-style direct set bottom bracket bearings require no threads or metal in the BB shell. | Photo: Zack Vestal
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