Harley-Davidson's Milwaukee-Eight engine has two spark plugs per cylinder. It's all about boosting performance, efficiency, and emissions, while reducing heat.

While you may be able to name a dozen prominent American manufacturers, few produce a product as legendary and iconic as Harley-Davidson, Inc. With more than a century of motorcycle building history, ...

Harley-Davison motorcycles are known for their use of big V-twin engines. The company's proprietary engine design has come a long way since the introduction of the first 49.5 cubic-inch version in ...

Few sounds in the motorcycle world are as iconic as the specific rumble of a big V-twin Harley-Davidson, but what about their engines makes such a unique sound?

Harley-Davidson was founded over 120 years ago and has been manufacturing motorcycles in America since 1903. The company's first motorcycle, the Model 1, was designed in 1901 and produced until 1904.

Harley-Davidson introduced the Panhead V-Twin in the fall of 1947 as a replacement for the Knucklehead engine for the upcoming 1948 model year. It would go on to power a number of iconic ...

Last week Harley-Davidson let loose its first salvo in the motorcycle war of this year, hoping for the best. Although there are practically no new models to enter the market yet, and that may be ...

Coming from a big Italian family, Anthony relishes in being the black sheep as the only adrenaline junkie. Even though he has gone bungee-jumping, rock-climbing, cliff diving, fought in mixed martial ...

Harley-Davidson's model codes may look confusing, but they actually follow a fairly simple structure. Here's what they mean and how to read them.