Metralla 250

1971 Bultaco Metralla 250 Technical Analysis & Specification Breakdown

Engineered by Bultaco for the classic motorcycle segment, the 1971 Bultaco Metralla 250 pairs a 244 cc (14.9 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 27.5 HP (20.1 kW) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 112.7 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 Metralla 250 measures 112 kg (247 lbs) wet (curb), translating to a power-to-weight ratio of 0.25 HP/kg (4.07 kg per horsepower). The 14-liter (3.7 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 150 km/h (93 mph).

Within MotoLibrary's Bultaco archive, this model family spans 4 indexed model years from 1970 to 1973, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.