Welcome to the new and improved Proflex / K2 Tech Forum!
K2 2000...frame size is supposedly S...http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEBIDX:IT&item=170225281085yet another bike that might be a good fit for my 'old lady'.
Definately a small, look at the upper shock mount hole going thru the toptube.
they didnt have any problems in themselves but they had a slightly different shock(to enable it to fit between the gussets of the shock mount).All the other sizes used a "normal" shock
its with a very heavy heart that im having to put my beloved oz up for sale,