125 SE
1977 Benelli 125 SE Technical Analysis & Specification Breakdown
Positioned in Benelli's classic motorcycle lineup, the 1977 Benelli 125 SE utilizes a 125 cc (7.6 cu in) air-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 14 HP (10.2 kW) at 7,800 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 112 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 SE measures 129 kg (284 lbs) wet (curb), translating to a power-to-weight ratio of 0.11 HP/kg (9.21 kg per horsepower). The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Benelli archive, this model family spans 4 indexed model years from 1977 to 1980, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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