Originally Posted by
yashinon
The 7.3 has a lighter frame and slightly better components.
And an entirely different handlebar system, grips, stem, saddle, different rims, tires, internal cable routing, aluminium fork and just about everything else on the bicycle that I didn't already mention including the entire drivetrain. I think you'd be hard pressed to find a common element between them other than the name. I think the 7.3 is the best value in the FX line and a huge upgrade over the 7.2.