Yamaha DT50

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Yamaha DT50

The DT50 is a 50cc Enduro ( 50 Shifty) motorcycle developed by the Yamaha motor company. The Yamaha DT50MX is the most common 50cc in the Yamaha DT series. It superseded the DT50M when introduced in June 1981 and can easily be identified by its Mono-Cross(MX) rear suspension with a silver painted square-section rear swinging arm. The 'MX' designation was commonly used on Yamaha motorcycles fitted with the 'Mono-Cross' rear suspension, which was the first to employ a single shock absorber. It remained in production largely unchanged until 1996, gaining only a CDI ignition system and a change to square bodied direction indicator lights in 1986 with the introduction of the 2FN model. The moped is very common in Scandinavia where its leading competitor was the Honda MT50.

Intake was by means of either a Mikuni vm18 smoothbore flatslide or a TK carburettor and the exhaust was an expansion chamber type with interchangeable addons (BigOne and DEP manufactured an improved system).

There was also a Paris Dakar style bodykit available which featured a wraparound fairing, different side panels and a tank cover although these are now getting hard to find.

800px-Yamaha DT50M slightly customized.JPG

DT Series

The Yamaha DT is a series of mopeds and motorcycles produced by the Yamaha Motor Corporation. Models in the DT series feature an engine displacement of 50 to 400 cc (3.1 to 24.4 cu in). The first DT model, the DT-1, was released in 1968 and quickly sold through its initial 12,000 production run.

The DT series was created by Yamaha in the late 1960s when the United States motorcycle market was down. Market research by Yamaha indicated that, despite slow motorcycle sales, there was a largely untapped market for off-road motorcycles. At the time, only a few specialty European manufacturers such as Bultaco and Husqvarna made motorcycles specifically for off-road use. Instead, many owners purchased road motorcycles and modified them for off-road use, typically by raising the muffler. Such modifications were commonly known as creating scramblers. The first DT model, the DT-1 trail bike, was released in 1968 and quickly sold out.

Tech Specs

  • General:
  Manufacturer: Yamaha
  Production: 1981–1996
  Predecessor: DT50M
  Successor: DT50R
  Class: Motocross / Enduro
  Engine: 49 cc (3.0 cu in) 2-stroke single
  Transmission: 5-speed or 6-speed, multi-plate wet clutch
  Wheelbase: 1,280 mm (50 in)
  Seat height: 820 mm (32 in)
  Fuel capacity: 8.5 Liters (2.2 US gal)
  Top Speed: ~60mph
  • Suspension:
  Front: Telescopic forks
  Rear: Yamaha Mono-cross
  • Brakes:
  Front: drum
  Rear: drum
  • Dimensions:
  L 2,055 mm (80.9 in)
  W 835 mm (32.9 in)
  H 1,135 mm (44.7 in)

Additional Info

  • Rear rim is a 17", front rim is a 19". Michelin Gazelle fits nicely on rear wheel.
  • Late 80's models are 6-speed
  • Early models were Air-Cooled
  • Has same cylinder stroke as Kreidler Flory / Florette mopeds
  • Treatland.tv carries a gasket set
  • Stock sprocket setup is 13 front, 48 rear. The best deal on new chain and sprockets seems to be on eBay here. The seller also has a 12/48 setup with chain for the same price here
  • Most parts can still be bought at Partzilla


Look Here for the manual! It has been uploaded to Google Drive and is available to the public for no cost.