I have an NOS Syncros Revolution crankset and am looking for the correct bottom bracket size (for a 68mm shell). I've done some searching and have come across anything from 109mm (from the 1994 catalog) to 117.5 (BikePro), and one occurrence of 122mm (retrobike). Anyway, the serial number is stamped 175 17840 if that helps.
Here are some photos:
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