One of the hot topics in recent months has been the development of Yamaha’s V4 engine, after the Japanese manufacturer – who ...

So, in 1953, it introduced the Appia, powered of course by a V4 engine. Barely. See, the 1.1-liter unit was again an ...

Yamaha has confirmed it will introduce its new V4 engine in MotoGP next season, so long as it's clearly faster than the inline-four ...

Yamaha technical director Max Bartolini has confirmed the factory has officially begun testing its V4-powered MotoGP machine. However, the Italian again emphasised that a switch from the current ...