Back in early 2020, Harley-Davidson announced the introduction of the Screamin’ Eagle 131, a V-Twin described as “the biggest, most powerful street-compliant engine Harley-Davidson has ever created." ...

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 ...

An engine's displacement dictates power output based on the bore and stroke, while compression ratio influences how strong ...

Tijo is an engineer, mechanic, and an avid content creator with over 5 years of experience as an automotive journalist. His media and publishing journey began with CarHP and CarIndigo, and soon ...

At first glance, the concept of engine compression is simple enough:It's the ratio of the volume of the combustion chamber and bore when thepiston is at bottom dead center (BDC) versus when it is at ...

As the maker of some of the world’s most cherished motorcycles, Harley-Davidson knows that from time to time it has to offer something for the custom industry to play with as well. So we occasionally ...

The history of the motorcycle engine is long and storied, and ever-evolving. From extremely reliable motorcycle engines to the powerful Harley-Davidson crate engines, there are major bike engine types ...

If you’ve ever wondered how Harley’s doing with their engines, sit down for a bit; we’ve got a press release celebrating that Harley’s just gone and set a new benchmark for performance – and not just ...

Harley-Davidson's modern V-twin is called the Milwaukee-Eight, and it's offered in a choice of different displacements. But ...