Really makes me wonder what is so heavy about my dahon mu. Most of my components should either be lighter or the same (carbon bar, carbon leavers, titanium seat rails, carbon cranks etc) plus I have a carbon fork & seatpost. Yet I am a good 1kg heavier. The only thing I can see that would be heavier on my bike are the grips as I love the full ergon grips, that is adding maybe 250grams.