Motorcycle engines live and die by how well they shed heat, and the choice between liquid and air cooling shapes everything from performance to maintenance. Riders weighing a new purchase or planning ...

Given their need for compact packaging, motorcycle engines tend to have few cylinders — most commonly one or two. While one-cylinder or thumper engines are small, easy to maintain, and relatively fuel ...

One way of looking at how vehicles are made today is to consider cars habitats on wheels, while motorcycles are, of course, nothing more than engines on wheels. And it's those engines, the biggest of ...