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MotoLibrary Score
43/100Commuter
Power
30 HP
Top Speed
150 km/h
Torque
21 Nm
Engine
249 ccm
Technical Overview
1968 Honda CB 250 K Technical Analysis & Specification Breakdown
Built around Honda's classic motorcycle platform, the 1968 Honda CB 250 K relies on a 249 cc (15.2 cu in) air-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 30 HP (21.9 kW) while maximum torque reaches 21 Nm (15.5 lb-ft) at 9,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 120.5 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 CB 250 K measures 160 kg (353 lbs) wet (curb), translating to a power-to-weight ratio of 0.19 HP/kg (5.33 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,320 mm (52 in) wheelbase engineered for quick, flickable steering geometry. The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 150 km/h (93 mph).
Specific Output
120.5 HP/L
Power-to-Weight
0.19 HP/kg (5.33 kg/HP)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power30.0 HP (21.9 kW))
Torque21.0 Nm (2.1 kgf-m or 15.5 ft.lbs) @ 9500 RPM
Compression9.0:1
Bore x Stroke56.0 x 50.0 mm (2.2 x 2.0 inches)
Valves/Cylinder2
Fuel SystemCarburettor. Keihin
Fuel ControlOverhead Cams (OHC)
Ignition2 sets points, bobine
LubricationForged and wet sump
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multi plate type
Performance
Top Speed150.0 km/h (93.2 mph)
ExhaustDouble chrome pipes and dampers
Chassis
Frame TypeSemy double cradle steel frame.
Rake27.0°
Trail85 mm (3.3 inches)
Front SuspensionTelescopic fork
Rear SuspensionSwinging arm pre-load adjustable schocks
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
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.
