125

1971 Jawa-CZ 125 Technical Analysis & Specification Breakdown

At the heart of the 1971 Jawa-CZ 125 naked motorcycle, Jawa-CZ features a 123 cc (7.5 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 11 HP (8 kW) at 5,750 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 89.4 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the 125 measures 120 kg (265 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (10.91 kg per horsepower). The 11.5-liter (3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 100 km/h (62 mph).

Within MotoLibrary's Jawa-CZ archive, this model family spans 7 indexed model years from 1971 to 2014, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.