28 tpi Bottom Bracket f/ One Piece Crank 28tpi for Schwinn / Mongoose

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28 tpi Bottom Bracket

 This is a new in the package bottom bracket. This BB is designed to be used with old school 1-piece cranks that have a 28 tpi and frames that have a classic American shell. This will only fit 28 tpi cranks like old Schwinn, Mongoose one piece cranks and early Redline Flight cranks.

 





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