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 Yamaha - DT MX
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Yamaha D2-492-54-08
Photo ou archives : F-M. Dumas

Capacity : 125
Model : DT MX
Production : 1977 - 1994
Category : (On-Off) multipurpose


125 DT/MX- 1977

Record-breaking sales

 Launched in 1977, at the dawn of a new golden age for motorcycling, the DT/MX Yamaha had a multitude of advantages. It was the best balanced of the new and fashionable breed of explosive trails bikes and a remarkahly reliable bargain.

New Breed of Sports Bike

The public, tired of utility machines, welcomed this versatile new breed of sport bikes with open arms. Off-road, they were a virtual match for real enduro machines. On-road, the comfort of their long-travel suspension was fantastic. Their lively engines and excellent handling made them an effective mode of transport in urban traffic.

Off-Road Bikes for the Town

The French fashion of using trail bikes in town spread across Europe, starting with the Latin countries. The DT/MX copied all the latest refinements of the motocross machines. In 1980, it was given a cantilever rear suspension built up with square tuhes, with a shock absorber beneath the saddle. In addition, the DT/MX had an electronic ignition. In turn, it gave birth to the DT/ LC. But the basic DT/MX remained in the catalogue until 1993- and it still retains a faithful following among enthusiasts. Despite changes in motorcycle license regulations, which throttled sales of 125cc machines. The DT/MX remains one or the world’s top-selling motorcycles. Thanks to record sales or 20,000 units a year in France in the late 1970s, Yamaha overtook Honda to become market leader in 1977, 1978 and 1981 .


Engine: 123cc (56x50mm) air-cooled single cylinder

Power Rating: 14 hr @ 6500 rpm

Valves: two-stroke: automatic intake valves in the cylinder

Fuel System: 22mm carburetor

Transmission: 6speed. chain final drive

Suspension: telescopic forks (front), swing arm with monodampcr (rear): travel 7 inchles/5,7 inches(front/rear)

Brakes: 5.1 inch drum (front & rear)

Wheels: 21 inch {front); 18 inch (rear)

Weight: 229 lb

In outstanding combinantion of value for money, quality and sheer enjoyabilily found the 125 DT/MX over 150, 000 customers in Europe alone.


Motorcycle encyclopedia Moto Passion, realised by François-Marie Dumas, include almost 2000 photos presented with an exhaustive history of the motorcycles exhibited.

This unique collection has been realised with the participation of many specialists. With many thanks in particular to Yves Campion, Michael Dregni, Didier Ganneau, Jean Goyard, Helmut Krackowizer, Michel Montange, Christian Rey, Bernard Salvat, Mick Woollett, etc

One can order here

  • Original cards on paper (in french)
  • High resolution scans or original documents presented and signed with my name.

Please contact me at for conditions and copyright.

© Tous droits réservés
François-Marie Dumas

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