Harley Davidsons seem to have found a way to make excessive noise without the distraction of more power.
A typical 600cc sportbike with stock exhaust produces more horsepower than a Harley big twin at triple the displacement.
Most of the mandates concerning motorcycle controls and lighting stem from US regulations. The US, after all, has traditionally been the biggest market in the world for large bikes
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I would rather listen to a loud Harley than three-four squids on CBR600s with aftermarket exhaust going at it. I live at the edge of a long straight road, where the annoying little things get wrung out on a regular basis.
