Harley-Davidson has spent more than a century refining the traditional American V-twin, but tradition can eventually become a technical restriction. By the late 1990s, rival manufacturers were ...

TJ started writing for TopSpeed in 2015, but has been writing on motorcycle and automotive topics since 2009 for outlets such as eHow, eHowNow, and MotorTrend subsidiaries. He is certified to work on ...

Crate engines are a lifeline for street-performance two-wheelers and four-wheelers. When Harley-Davidson introduced the Screamin' Eagle 135ci Stage IV Performance Crate Engine in 2023, it wasn't just ...

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 has packed the Road Glide RR with high-performance Screamin’ Eagle Stage IV components. These include a high-capacity inner camshaft bearing, upgraded valve lifters, high-performance valve ...

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 V-Rod with a Revolution engine on display at the Porsche Museum. - Morio/Wikimedia Commons Think of a Harley-Davidson powerplant, and chances are that some iteration of the company's ...