I think fitting is slightly less of an issue with a trek fx than a road bike - just because flat bars can be a bit more forgiving with the upright position. But there's no reason you can't get a used fx and take it to your bike shop and pay for a fitting.

How thorough a fitting does the bike shop include with an fx vs. how much extra would you pay to have one done? It's possible if you had the fitting while you were paying for a new bike, they would swap on the new parts without charging you extra or much - butI guess you'd have to get the details of all of that.


If you're 5'3, you're probably looking for between a 44-49 cm road bike, but it's going to somewhat depend on whether you have long legs vs. a short torso, etc,whether or not you'll need a WSD or not.

Test ride a lot of bikes at the bike shop initially.