Harley-Davidson’s ‘Big Twin’ timeline stretches back to 1914 and the introduction of the 1000cc F-head. And in the following century and a bit it’s only gone through seven distinct engine ranges. This is the eighth. That alone might be enough alone to warrant the name ‘Milwaukee-Eight’, but there’s a second, more important reason for the designation, and that’s the number of valves. Insiders say there are eight of them, four…
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