ETZ 251 (with sidecar)

1989 MuZ ETZ 251 (with sidecar) Technical Analysis & Specification Breakdown

Engineered by MuZ for the motorcycle segment, the 1989 MuZ ETZ 251 (with sidecar) utilizes a 243 cc (14.8 cu in) air-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 21 HP (15.3 kW) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 86.4 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 ETZ 251 (with sidecar) measures 228 kg (503 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (10.86 kg per horsepower). The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 101 km/h (63 mph).

Within MotoLibrary's MuZ archive, this model family spans 3 indexed model years from 1989 to 1991, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.