Built around Kawasaki's enduro - offroad motorcycle platform, the 1975 Kawasaki F-11 250B relies on a 250 cc (15.3 cu in) air-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 22 HP (16.1 kW) at 6,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 88 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the F-11 250B measures 119.7 kg (264 lbs) dry, translating to a power-to-weight ratio of 0.18 HP/kg (5.44 kg per horsepower). The 9.46-liter (2.5 US gal) fuel tank paired with a rated consumption of 4.7 L/100 km provides an estimated theoretical range of roughly 201 km (125 miles) between fill-ups.
Specific Output
88 HP/L
Power-to-Weight
0.18 HP/kg (5.44 kg/HP)
Theoretical Range
~201 km (125 mi)
Engine
Displacement250.0 ccm (15.26 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power22.0 HP (16.1 kW)) @ 6500 RPM
Bore x Stroke68.0 x 68.0 mm (2.7 x 2.7 inches)
Fuel SystemCarburettor. 28mm Mikuni
Fuel ControlPort control
Ignitionpoints, condensor
LubricationAuto oil injection
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Clutchwet plate
Performance
Fuel Consumption4.70 litres/100 km (21.3 km/l or 50.05 mpg)
Greenhouse Gases109.0 CO2 g/km. (CO2 - Carbon dioxide emission)
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
