For more than a century, Harley-Davidson has built its motorcycles around a few engines, none more defining than the V-twin, as this engine layout is a big part of why Harleys have such a distinct ...

Think of a Harley-Davidson powerplant, and chances are that some iteration of the company's big V-twin engines will come to mind. Indeed, given Harley's long association with the format, it's ...

This six-year-old CVO Harley packs a beastly V-Twin with over 120 pound-feet of torque.

Harley-Davidson has a long history of powering its motorcycles with "Big Twin" engines. So much so that the company's Milwaukee-Eight engine represented the ninth generation of these iconic ...

The Evolution Big Twin-engined motorcycles like Fat Boys and Road Kings spent 18 years using a single four-lobed camshaft, while the Sportster's Evolution motor — and its ancestors like the K-model ...

In 1936, Harley-Davidson bet its future on an engine nobody had asked for. The country was still climbing out of the worst motorcycle sales slump in American history, and the company’s big twins were ...