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 ...

The heart and soul of any motorcycle (battery-powered motorcycles notwithstanding) is its engine. From its mighty roar to its fierce torque, a reliable engine can turn an average motorcycle into a ...

Honda's 1982 V45 engine powered the first mass-produced V4 motorcycles but faced reliability issues that nearly killed the ...

Founded in 2011 by Gard Hollinger, and actor and motorcycle collector Keanu Reeves, ARCH Motorcycle is an American boutique motorcycle manufacturer. Known for creating custom one-off bikes, Arch ...

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 ...

Close up of engine cover on a Harley-Davidson Milwaukee-Eight engine - Felix Geringswald/Shutterstock Harley-Davidson has a long history of powering its motorcycles ...