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Discussion Starter · #1 ·
I recently purchased a specialized tarmac s-works team gerolsteiner 2006 model year. I am swapping componentry from my old bike. The front derailleur is a 31.8mm- it will fit on the new frame but is perpendicular to the frame, which, of course, will not work. When turned parallel, it is too narrow.

It appears there is no way to alter this derailleur (ultegra). My question is: should I buy the 34.9mm front derailleur and add shims? where does one get shims that are proper?
Thanks SO much for the help.
Bill from Saginaw
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