Kerry Mwrote a question about Osymetric Chainring Compact 110mm BCD on August 17, 2013
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?