The V-Rod wasn't your typical Harley, and the Muscle version pushed it even further. Here's the engine behind the Muscle and how much one is worth.

Harley once built a radically modern V-twin with outside help, and its ideas would shape the company’s future decades later.

Harley-Davidson's Evolution and Revolution engines are both powerful Big Twin engines, but there's a lot that separates the ...

Harley-Davidson's history shows distinctly it likes to make air-cooled v-twin cruisers often dripping with chrome. It's also shown that outside the box thinking is possible and has been almost from ...