125D Series 2

1953 Lambretta 125D Series 2 Technical Analysis & Specification Breakdown

Engineered by Lambretta for the scooter motorcycle segment, the 1953 Lambretta 125D Series 2 features a 123 cc (7.5 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 5 HP (3.6 kW) at 4,600 rpm, transferring power to the rear wheel through a 3-speed gearbox. With a specific output of 40.7 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the 125D Series 2 measures 69.9 kg (154 lbs) dry, translating to a power-to-weight ratio of 0.07 HP/kg (13.98 kg per horsepower).

Within MotoLibrary's Lambretta archive, this model family spans 2 indexed model years from 1953 to 1954, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.