The oddball beast debuted at the 2017 Tokyo Motor Show, and while it's not the first leaning three-wheeler we've ever seen – the Piaggio MP3 immediately comes to mind – it's definitely the most surprising.
We're woefully short on details, other than the fact that the Niken sports a 900cc three-cylinder engine and is about 7 feet long and 3 feet wide. The two wheels up front are 15-inch units, making them a couple inches smaller than typical sportbike wheels, and they are propped up by twin dual-tube fork units. And did we mention it leans into corners like a traditional two-wheeler?
Yamaha cites "a high feeling of stability when cornering" as the main benefit of a second wheel up front, which makes sense considering there's an extra contact patch on the ground. How well it works in practice is something we're keenly interesting in finding out.