The 45-degree V-twin configuration of a Harley-Davidson engine and when each piston fires are part of why the iconic American motorcycles sound the way they do.

Anyone who collects stuff is probably familiar with the urge to find tiny versions of big things. Even better is when the tiny version is functional. That's what makes this minuscule 9cc ...

But current engines are so predictable. Harley got surprisingly creative in its choice of engine notes, tying in over a century of history, the company. Other engine sounds available include the 1974 ...

Harley-Davidson has shoehorned the High Output 103 Twin Cam engine into its fleet of Softail and Dynas, but some countries, such as Australia, will have to wait for the more powerful Dyna. READ ABOUT ...

Imagine a Harley-Davidson motorcycle with an engine smaller than the Honda Minimotos of today. Sounds silly, right? Well, the smallest engine ever on a Harley-Davidson is actually smaller than the ...

MILWAUKEE — Harley-Davidson Inc. on Tuesday introduced an all-new engine, the Milwaukee-Eight, named for the city where the company was born. Harley says it's only the eighth time in the company's 113 ...