Built around Maico's cross - motocross motorcycle platform, the 1978 Maico MD 250 WK relies on a 245 cc (15 cu in) liquid-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 27 HP (19.7 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 110.2 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 WK measures 132 kg (291 lbs) wet (curb), translating to a power-to-weight ratio of 0.2 HP/kg (4.89 kg per horsepower). The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 151 km/h (94 mph).
Within MotoLibrary's Maico archive, this model family spans 6 indexed model years from 1978 to 1983, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
110.2 HP/L
Power-to-Weight
0.2 HP/kg (4.89 kg/HP)
Engine
Displacement245.0 ccm (14.95 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power27.0 HP (19.7 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)
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultiplate wet clutch in oil bath
DrivelineChain final drive
Chain Size520
Performance
Top Speed151.0 km/h (93.8 mph)
Wheels & Brakes
Front Tyre3.00-18
Rear Tyre3.25-18
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Weight incl.132.0 kg (291.0 pounds)
Fuel Capacity17.00 litres (4.49 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.
