I just called Thor. He says the Biologic suspension seatpost is the same size as the stock seatpost in diameter and length. He says it replaces the stock post so essentially you loose the pump which in my case isn't that big a deal since I'm using it to commute in city so if I get a flat it isn't that long a walk to the office.

Oh and he has both black and silver.

So my next question is the bracket on the front frame of the Curve above the fork. Is Klick Fix the only mounting system that accepts this mount? I'm thinking of getting a front bag but I'd want it to double as a casual office bag and the Click Fix product (Allegra) is $125 and that's a lot to spend.

Anyone know any alternatives? I know the baskets are a possibility but I prefer an actual bag.

Update: Hum, seems like according to Dahon.com this mount only accepts KlickFix equipment. It sticks that no one really imports their entire line up as I'd like to get a map bag (even if it would be out of sight in that position). Also, they are hella expensivo.

http://www.klickfix.com/indexe.html