K 125 Military

1980 Hercules K 125 Military Technical Analysis & Specification Breakdown

Engineered by Hercules for the cross - motocross motorcycle segment, the 1980 Hercules K 125 Military pairs a 124 cc (7.6 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 12.5 HP (9.1 kW) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 100.8 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.

On the scales, the K 125 Military measures 135 kg (298 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (10.8 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 94 km/h (58 mph).

Within MotoLibrary's Hercules archive, this model family spans 20 indexed model years from 1971 to 1990, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.