From the archives...

For a definitive answer where the specs are in question, ask the seller to provide you with the serial number (its located on the bottom of the left chainstay)... Then call Cannondale Tech Support and ask them to decode it: 1-800-245-3872

If it were a single bike I'm pretty sure it could still be decoded using C'dale's standard Serial Number sequence (see quoted text from Sheldon Brown's website below).


Cannondale (http://www.sheldonbrown.com/vrbn-a-f.html#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.

However, off hand I seem to recall that they use a slightly different serial number sequence for tandems, perhaps using letters for sizing on the newer tandems that throws off the standard tables. In the "old days", the first four numbers were the frame size, followed by month/year, then the sequence number, e.g., a 98 MT3000 with serial number 18160398102 = 18" captain / 16" stoker built in March 98 with the sequence number of 102. Our only C'dale tandem was a '98 MT3000.