1974 Yamaha YZ80 unicycle.
4:15 video:
Previously:
Motorcycle dump carriage - GIF
Lazareth flying motorcycle - GIF
Motorcycle wheelie and turning trainers - GIF and photo
World's smallest rideable motorcycle - video
Lightweight 2x2 Russian ATV motorcycle - video
1903 Harley-Davidson serial number one motorcycle - photo
Snowmobile motorcycle - photo
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