4 valves 2cylinder simple air-cooled design works pretty well, it takes 4cylinders 16valves bunch of carbs water cooled and a lot of plastic to smoke you on a few bike lengths. face it most of of us drive on roads not race tracks, so low end power is what you use most. the Sportster looks good sounds good got good low end, I got foward contorls and don,t have to hug a gas tank with the back of my shirt flying up over my head. works for me, anyway.
