Thread: Bottom Bracket Question
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Old 09-05-13 | 01:36 PM
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ThermionicScott
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From: CID

Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)

That is puzzling, but the 113mm UN55 ought to work. Perhaps the crankset is specified for lower-priced bikes, and Shimano knew owners would be upset if the bike shop accidentally used a pricier replacement BB? That's just a wild guess.
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