Two-cylinder engines can be further separated into three general layouts: V-twin, Parallel-twin & Flat-twin. As flat-twin, aka Boxer engines, are relatively rare outside of BMW's motorcycle lineup ...

270-degree parallel-twin engines are replacing inline-fours due to stricter emission norms. Secondary imbalance is offset by the uneven firing order of 270-degree cranks, resulting in excellent ...

Parallel twin engines are everywhere. Think of a capable light or middleweight bike that performs well and doesn’t cost an arm and a leg to own, chances are you’re thinking of a bike with a ...

and a parallel twin is definitely easier to maintain and service than a V-twin. Of course, it isn’t like it is without its ...

The contrails, or condensation trails, streamed in parallel lines toward the horizon as they tapered off into the atmosphere. The event was accompanied by an uptick in Google searches for ...

With a patent application for a parallel-twin engine coupled to a belt-operated CVT, CFMoto now looks set to join the party. A continuously variable gearbox permits an infinite number of effective ...