A straight-twin engine, also called an inline-twin or parallel-twin, is a two-cylinder setup where both cylinders sit side by side, upright, and share a single crankshaft. It's the simplest way to ...

Although Subaru didn't invent flat engines, and isn't the only automaker still using them, those motors have become a defining characteristic of the brand. (The same can be said for all-wheel drive, ...

Automobiles have been around in some form for around 150 years. In that time, countless combustion engines have been produced by manufacturers all over the globe. From flat-four engines to massive ...

Cruiser motorcycles come in different shapes and sizes, although the definition may vary a bit depending on who you ask. Some purists might argue that Harley-Davidson is the only purveyor of the true ...