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Gear Question

Unanswered Question

On my 25+ year old Vitus I would like to...

Posted on

On my 25+ year old Vitus I would like to replace my "Biopace" rings (52/42)with an osymetric. Will it fit? I have a new 13-28 Shimano cluster and new chain.
Also are there 2 rings or do I just do the big ring?