K 180 Military

1991 Hercules K 180 Military Technical Analysis & Specification Breakdown

At the heart of the 1991 Hercules K 180 Military motorcycle, Hercules relies on a 178 cc (10.9 cu in) air-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 17 HP (12.4 kW) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 95.5 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 K 180 Military measures 135 kg (298 lbs) wet (curb), translating to a power-to-weight ratio of 0.13 HP/kg (7.94 kg per horsepower). The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 110 km/h (68 mph).

Within MotoLibrary's Hercules archive, this model family spans 2 indexed model years from 1991 to 1992, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.