125 L

1971 MBK 125 L Technical Analysis & Specification Breakdown

Built around MBK's motorcycle platform, the 1971 MBK 125 L relies on a 125 cc (7.6 cu in) air-cooled twin, two-stroke powerplant. In factory specification, peak output is rated at 13.5 HP (9.9 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 108 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 125 L measures 114 kg (251 lbs) wet (curb), translating to a power-to-weight ratio of 0.12 HP/kg (8.44 kg per horsepower). The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 118 km/h (73 mph).

Within MotoLibrary's MBK archive, this model family spans 2 indexed model years from 1971 to 1972, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.