Originally Posted by TomM
I've got the same frame. Last year I sent Cannondale my serial # and pictures and they were able to send me detailed info on the frame. I recommend you do the same.
From the great Sheldon Brown:
"Cannondale Serial number code: first two digits are the size, next 6 are date of manufacture, remainder are unit number. For instance: SN#54021787121 indicates a 54 cm frame, built on February 17, 1987, #121."
(link:
http://www.sheldonbrown.com/vrbn-a-f.html#cannondale)