By the 1980s, the Shovelhead, which was introduced in 1966, had become obsolete, paving the way for the Evolution engine. The Evo remains one of, if not the best engine Harley made to the present day.

One of the most notable is the Evolution engine, which hit the market for the first time in 1984. Defined by its 45-degree V-twin setup, aluminum construction, and strong air-cooling system ...

The engine itself is also dry-sumped ... wishbones at all four corners and standard-fit magnetorheological dampers. Evo models also introduced a new electronic brain which centralises all of ...