the Evolution was later surpassed by the Twin Cam, which hit the streets in 1998 before concluding its run in 2017. Ironically, Harley's engine design evolved, leaving the Evolution outdated by ...

The Evo's mission was straightforward: Revitalize Harley's reputation ... of the biggest motorcycle engines ever made. The larger displacement with cooling can run higher compression ratios ...

Harley-Davidson is probably the most famous ... At its heart lies an air-cooled, 1202cc, Evolution engine mated to a five-speed manual transmission, and can produce 107 Nm of torque at 4000 ...