Engineered by Kawasaki for the custom - cruiser motorcycle segment, the 1979 Kawasaki KZ 400 H LTD features a 398 cc (24.3 cu in) air-cooled twin, four-stroke configuration. In factory specification, peak output is rated at 36 HP (26.3 kW) at 8,500 rpm while maximum torque reaches 31.2 Nm (23 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 90.5 HP per liter and a 1,500 rpm working window between peak torque (7,000 rpm) and peak power (8,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the KZ 400 H LTD measures 170 kg (375 lbs) dry, translating to a power-to-weight ratio of 0.21 HP/kg (4.72 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,390 mm (54.7 in) wheelbase engineered for quick, flickable steering geometry. The 12-liter (3.2 US gal) fuel tank paired with a rated consumption of 3.85 L/100 km provides an estimated theoretical range of roughly 312 km (194 miles) between fill-ups.
Specific Output
90.5 HP/L
Power-to-Weight
0.21 HP/kg (4.72 kg/HP)
Power Band Window
7,000–8,500 rpm
Theoretical Range
~312 km (194 mi)
Engine
Displacement398.0 ccm (24.29 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power36.0 HP (26.3 kW)) @ 8500 RPM
Torque31.2 Nm (3.2 kgf-m or 23.0 ft.lbs) @ 7000 RPM
Compression9.5:1
Bore x Stroke64.0 x 62.0 mm (2.5 x 2.4 inches)
Valves/Cylinder2
Fuel SystemCarburettor. Keihin VN32SS x 2
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionBattery and coil
Lubricationforced lubrication (wet sump)
CoolingAir
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Clutchwet muti disc
Performance
Fuel Consumption3.85 litres/100 km (26.0 km/l or 61.10 mpg)
Greenhouse Gases89.3 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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
