I ride an xs Racer X, and it fits me really well, I am 5'3and 1/2. gotta have the 1/2 in there! I bought it for racing, a few of my nonracing friends have the Motolite.

My suggestions. Call Titus. There is an onle measurement thing that you can use, and they could probably help you.

It is an amazing bike, but expensive, and you probably want to get it right the first time.

Give them a call.

Good Luck,
Ruth