Despite declining sales and revenue in 2025, Harley-Davidson has been the dominant American motorcycle maker for most of its long and illustrious history. Harley has produced a succession of engines ...

Over the last century, American motorcycle giant Harley-Davidson has put out several iconic engines, each unique enough to have an impact, however small, not only on the company itself but also on the ...

Harley-Davidson unveiled its first new motorcycle engine in over 15 years, a completely new, single cam engine to replace the Twin Cam engine that debuted in 1999. It was time for an update.