125 Trail

1978 CZ 125 Trail Technical Analysis & Specification Breakdown

Built around CZ's cross - motocross motorcycle platform, the 1978 CZ 125 Trail pairs a 123 cc (7.5 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. 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 Trail measures 127 kg (280 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (11.55 kg per horsepower). The 11-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 90 km/h (56 mph).

Within MotoLibrary's CZ archive, this model family spans 3 indexed model years from 1976 to 1978, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.