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Shimano bb91-41 integrated bottom bracket

2K views 1 reply 2 participants last post by  mtnbiker72 
#1 ·
I have a 2009 lapierre pro race 400, which has an integrated bottom bracket, a bb91-41, and was wondering if there is a way to put a standard bottom bracket on it, external or internal, something like an adaptor, or if you can purchase different bearing sets, such as ceramics or for differnent crank brands.

Thank you
 
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