Yamaha DT 50 MX - 1983 Specifications and Reviews

The 1983 Yamaha DT 50 MX is a lightweight 50cc two-stroke enduro designed for young riders and beginners seeking affordable, reliable off-road adventure. Its air-cooled single-cylinder engine and six-speed transmission deliver accessible performance across varied terrain. Known for durability and ease of maintenance, the DT 50 MX remains a popular entry-level machine for learning fundamental riding skills.

5 stars Average rating: 5 from 1 votes
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Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox6-speed
Cooling systemAir
Lubrication systemoil pump
StarterElectric & kick
Ignitionkey and kickstart
Fuel controlPort control
Stroke2
Engine typeSingle cylinder
Capacity:50.00 ccm (3.05 cubic inches)

Physical measures and capacities

Ground clearance254 mm (10.0 inches)
Overall width262 mm (10.3 inches)
Alternate seat height790 mm (31.1 inches) If adjustable, highest setting.
Seat height790 mm (31.1 inches) If adjustable, lowest setting.
Rear percentage of weight55.0
Front percentage of weight45.0
Weight incl. oil, gas, etc85.0 kg (187.4 pounds)
Dry weight81.0 kg (178.6 pounds)
 
 

Yamaha DT 50 MX dimensions and frame

Exhaust systemgaenelli
Rear brakesExpanding brake (drum brake)
Front brakesExpanding brake (drum brake)
Rear suspensionmonoshock
Front suspension travel203 mm (8.0 inches)
Front suspensionoil filled

Speed and acceleration

1/4 mile (0.4 km)25.000 seconds
Top speed104.6 km/h (65.0 mph)

CategoryAllround
Year1983
ModelYamaha DT 50 MX

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsRed/white, black/red, black/blue
Oil capacity1.00 litres (0.07 quarts)
Fuel capacity4.23 litres (1.12 gallons)

Performance Profile & Rider Fit

65 mph
Top Speed

Best For

Track10%
City50%
Cornering45%
Daily Riding35%
Touring15%
Passenger10%

Rider Profile

Best ForThis is a lightweight learner-friendly moped-class bike suited to beginners, young riders, or those just starting out on two wheels.
PurposeBuilt as a small dual-purpose 50cc trail bike, it's meant for light off-road exploring, commuting short distances, and casual fun rather than outright performance.
Rider FitIts very low dry weight, low seat height, and narrow width make it extremely easy to handle and manage for smaller or less experienced riders.
CharacterIt has a playful, nimble, go-anywhere personality typical of small two-stroke trail bikes, prioritizing lightness and simplicity over speed.
Not Ideal ForThis bike is not for riders wanting highway speed, long-distance touring comfort, or a capable passenger-carrying setup.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

1983 Yamaha DT 50 MX Rider Ergonomics Assessment

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Feet:

At 790mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 1983 Yamaha DT 50 MX, with a relaxed knee angle of around 120 degrees and a forward-leaning riding position.

Data quality: estimated (wheelbase estimated from this category's typical bike, not this model's own spec). Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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