My aforementioned bike is 31 lbs or so with fenders (Freddy Fenders), no rack. That includes, though, the heavy chunk of metal that is the Adams Trail-A-Bike Hitch so that probably can take the place of a IGH; I'd bet it at least makes up the difference especially since the drivetrain is not what I'd call modern and lightweight. The difference of an IGH is said to be a pound or so. A rack is, what, a pound maybe? Are they using *really* heavy fenders? Are discs really that much heavier? Curious.