If you're looking for a lightweight folding bike with a decent set of gears, Brompton's superlight is the best bike money can buy.
Titanium rear triangle and fork, with superlight touches like titanium fender stays, an ultralight front wheel and aluminum headset. All told, with fenders, the Superlight 6-speed weighs in at 24 pounds. Add on the diet kit to save more than half pound.
