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 Ironically, Harley's engine design evolved, leaving the Evolution outdated by ...

Harley-Davidson is probably ... fans of House Milwaukee machines. On the tech/engine side of things, it sports the proven, 1200cc, air-cooled Evolution powerplant mated to a dependable five ...