GPZ 900 R

1989 Kawasaki GPZ 900 R Technical Analysis & Specification Breakdown

At the heart of the 1989 Kawasaki GPZ 900 R sport touring motorcycle, Kawasaki pairs a 908 cc (55.4 cu in) liquid-cooled in-line four, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 115 HP (83.9 kW) at 9,500 rpm while maximum torque reaches 83.5 Nm (61.6 lb-ft), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 126.7 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 GPZ 900 R measures 257 kg (567 lbs) wet (curb), translating to a power-to-weight ratio of 0.45 HP/kg (2.23 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,495 mm (58.9 in) wheelbase engineered for balanced agility and highway composure. The 22-liter (5.8 US gal) fuel tank paired with a rated consumption of 6.9 L/100 km provides an estimated theoretical range of roughly 319 km (198 miles) between fill-ups, while factory top speed is listed at 254 km/h (158 mph).

Within MotoLibrary's Kawasaki archive, this model family spans 9 indexed model years from 1984 to 1992, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.