I weighed my '03 Busa last night. Full tank of gas and all of the riding gear with no rider....560lbs. It comes in at 750lbs with me on it. So 750lbs and 174hp = 4.3lbs/hp. Not too bad power to weight ratio. My buddy weighed his '00 Gixxer 600 and I couldn't believe how heavy it was. 450lbs with no rider! I think Suzuki's specs from factory are bullshit.