1955 Lambretta 150D Series 2 Technical Analysis & Specification Breakdown
Positioned in Lambretta's scooter motorcycle lineup, the 1955 Lambretta 150D Series 2 pairs a 150 cc (9.2 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 6 HP (4.4 kW) at 4,750 rpm, transferring power to the rear wheel through a 3-speed gearbox. With a specific output of 40 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 150D Series 2 measures 74.8 kg (165 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (12.47 kg per horsepower).
Within MotoLibrary's Lambretta archive, this model family spans 2 indexed model years from 1954 to 1955, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
