The old DTR
A moped in the Yamaha DT series. Production were 1992-95. It had big wings for water cooling even though it were air cooled. It had 12 volt electric system and it had disc brakes in the front. It had the same motor as Yamaha DT50MX.
The new DTR
Production started in 1997 and is still going as far as i know. It's probably the only moped that Yamaha has made that dosen't have a Yamaha motor. It's very plastic and is only sold in Sweden and Finland. It's produced in Spain.
See Yamaha DT