Tz250: The Reverse Cylinder models

This is the bike that really draw some attention to Yamaha racing models.

1988 - TZ250U (3AK)
1989 - TZ250W (3LC)
1990 - TZ250A (3TC)

The production of the reverse cylinder Tz250 started on 1988 and lasted until 1990. 

This is the year that Yamaha stopped producing the YZR250 and the teams joined to make a new design based on a V2 engine.