GPZ 305 Belt Drive (reduced effect)

1988 Kawasaki GPZ 305 Belt Drive (reduced effect) Technical Analysis & Specification Breakdown

At the heart of the 1988 Kawasaki GPZ 305 Belt Drive (reduced effect) sport motorcycle, Kawasaki relies on a 306 cc (18.7 cu in) air-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 27 HP (19.7 kW) at 10,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 88.2 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 GPZ 305 Belt Drive (reduced effect) measures 164 kg (362 lbs) wet (curb), translating to a power-to-weight ratio of 0.16 HP/kg (6.07 kg per horsepower). The 16.5-liter (4.4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 140 km/h (87 mph).

Within MotoLibrary's Kawasaki archive, this model family spans 6 indexed model years from 1985 to 1990, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.