GPz 400

1989 Kawasaki GPz 400 Technical Analysis & Specification Breakdown

At the heart of the 1989 Kawasaki GPz 400 naked motorcycle, Kawasaki pairs a 399 cc (24.4 cu in) in-line four, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 51 HP (37.2 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 127.8 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.

Within MotoLibrary's Kawasaki archive, this model family spans 4 indexed model years from 1983 to 1989, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.