Harley-Davidson has several great engines in its stable, one of which is the 117. But how much horsepower does this burly engine really make?
Throughout the history of motorized vehicles, a number of engines have become famous for being the best of their generation. Even motorcyclists have heard of a Chevy 427 small block V8, the engine of ...
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Why collectors are hunting down vintage Harley Knuckleheads
Fewer than 4,000 rideable examples survive, and prices keep climbing.
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