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Join Date: Aug 2010
Location: Washington
Posts: 472
Bikes: Serotta Davis Phinney, 1992 Serotta T Max,1984 Specialized Allez, Olmo, 1974 Strawberry,Redline bmx, ect.,
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The BB I think should but not the components. The 7900 group is not interchangeable with 7800 series as the lever ratios have changed as well as the deraileurs and offset of the crank set, we just built a bike w DI 2 and the 7800 brakes seamed to work fine with the rest of the 7900. Good luck