Tengai (reduced effect)

1990 Kawasaki Tengai (reduced effect) Technical Analysis & Specification Breakdown

Engineered by Kawasaki for the touring motorcycle segment, the 1990 Kawasaki Tengai (reduced effect) utilizes a 652 cc (39.8 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 27 HP (19.7 kW) at 5,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 41.4 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the Tengai (reduced effect) measures 190 kg (419 lbs) wet (curb), translating to a power-to-weight ratio of 0.14 HP/kg (7.04 kg per horsepower). The 23-liter (6.1 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 130 km/h (81 mph).

Within MotoLibrary's Kawasaki archive, this model family spans 4 indexed model years from 1989 to 1992, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.