introduced the first mass-produced motorcycle (pictured above) with a twin-cylinder configuration. Its four-stroke engine used a pair of side-by-side pistons to make 2 ½ hp, driving a bike that ...

The biggest Kawasaki engine in 2025 produces more torque and has two fewer cylinders than the supercharged H2 sports bike.

The difficulty of rolling a 16-cylinder engine into a motorcycle really boggles the mind. But that’s exactly what [Andreas Georgeades] is doing in his garage. It’s two straight-8 engines ...