My tri bike is an MS600/Cannondale with Shimano components and aero bars. The measurement from center of bottom bracket to top of seat tube is 23.5 inches.
The top tube is 2 inches below that.
I am 5'5" and it fits me good.
I am asking $450.
Let me know if you know anyone who would be interested.
Todd Yarnell, SCI Cresson, 814-886-8181