NEXT month's Tokyo Motor Show only happens every other year and it's always been the traditional home of the wackiest of concept bikes from the big Japanese manufacturers.

We're guessing Yamaha has got something up its sleeve, since it's just released details on some of the less-significant concepts that are going to appear there.

First up, there's the XTW250 Ryoku, which is basically a vision of what a bike might be like if JCB designed it. Yamaha call it an 'SUV motorcycle' and say it's “Yamaha's idea of a dependable partner for people who love motorcycles and the outdoor life.”

Then there's the Y125 Moegi, which looks rather like a 1950s pushbike with a 125cc single shoehorned into the frame. According to Yamaha; “Besides its appeal as a personal vehicle for daily commuting, it sports an active image that will lure owners on longer jaunts on the weekends.”

Of course, both are just concepts, so the chances of production are slim.