Z 400 B

1980 Kawasaki Z 400 B Technical Analysis & Specification Breakdown

Positioned in Kawasaki's touring motorcycle lineup, the 1980 Kawasaki Z 400 B pairs a 390 cc (23.8 cu in) air-cooled twin, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 27 HP (19.7 kW) at 7,200 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 69.2 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 Z 400 B measures 182 kg (401 lbs) wet (curb), translating to a power-to-weight ratio of 0.15 HP/kg (6.74 kg per horsepower). The 14-liter (3.7 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 141 km/h (88 mph).

Within MotoLibrary's Kawasaki archive, this model family spans 2 indexed model years from 1978 to 1980, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.