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Discussion Starter · #1 ·
Hi, I am looking to purchase a Marinoni Piuma frame and have a question about switching over components from my Giant OCR 2. The components are 9 speed Tiagra from 2003. My plan is to slowly upgrade these components over the next couple of years. I do understand it is cheaper to buy a complete bike with everything on it but I want to build the bike for experience, as well as I can put on the components I want.

Will the Tiagra shifters work on a 31.8 handlebar?
What other issues could I face with moving the components over?

Thank you for your help,

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