Contrary to popular belief, the brand's iconic, influential and enduring V-twin engine initially landed with a resounding ...

Harley-Davidson isn't the oldest American marque – that distinction goes to Hendee/Indian – but it's the only one that has been in continual operation since its inception in 1903 up through ...

If you see an image of a Harley-Davidson that looks like a bicycle with a V-twin powering it, there’s a high chance that you’re looking at an F-head. This series of engines was in production ...

Harley-Davidson ... hauling a bagger up and down mountain roads and passing vehicles on open roads. The Milwaukee 8 (M8) is the present and (near) future of Harley-Davidson engines.

The smallest Harley-Davidson engine today powers the 2025 Nightster models. While it is the smallest engine today, it is by ...

Harley-Davidson engines contain two pistons, but they do not fire at fixed intervals. There is also only one pin for both pistons and its spark plugs are positioned at a 45-degree angle.