That is a very appealing exhaust note. And, like you say, very crisp indeed. I am curious, is the W400 the same size chassis as the W650/W800 but with a smaller displacement engine?
The W400 is a short stroke engine of Bore 72mm stroke 49mm, Max power 29ps/7,500rpm and the smae size chassis as the W650/W80, which is probably a model for the domestic market of Japan. The owner says, this bike is a low power, but feels it low vibration and comfortably.