At the heart of the 1973 Maico MD 250-6 cross - motocross motorcycle, Maico pairs a 245 cc (15 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 28 HP (20.4 kW) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 114.3 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the MD 250-6 measures 126 kg (278 lbs) wet (curb), translating to a power-to-weight ratio of 0.22 HP/kg (4.5 kg per horsepower). The 12.5-liter (3.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 159 km/h (99 mph).
Within MotoLibrary's Maico archive, this model family spans 5 indexed model years from 1973 to 1977, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
114.3 HP/L
Power-to-Weight
0.22 HP/kg (4.5 kg/HP)
Engine
Displacement245.0 ccm (14.95 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power28.0 HP (20.4 kW)) @ 7000 RPM
Compression11.7:1
Bore x Stroke76.0 x 54.0 mm (3.0 x 2.1 inches)
Valves/Cylinder0
Fuel ControlRotary valves
LubricationPremix fuel/oil mixture (1:40 - 1:50)
CoolingAir
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultiplate wet clutch in oil bath
DrivelineChain final drive
Chain Size520
Performance
Top Speed159.0 km/h (98.8 mph)
Wheels & Brakes
Front Tyre2.75-18
Rear Tyre3.25-18
Front BrakesExpanding brake
Rear BrakesExpanding brake
Dimensions & Weight
Weight incl.126.0 kg (277.8 pounds)
Fuel Capacity12.50 litres (3.30 US gallons)
Oil Capacity0.75 litres (0.79 US quarts) transmission oil
Service & Fluids
Engine Oil2-stroke synthetic motorcycle oil (API TC / JASO FC/FD)
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
