CZ 125cc


The CZ 125cc motorcycles are a series of two-stroke motorcycles produced by the Czech manufacturer ČZ (Česká Zbrojovka Strakonice).


General Specifications (varied slightly by model and year):

  • Engine: Air-cooled, single-cylinder, two-stroke
  • Displacement: 123cc
  • Bore x Stroke: 52mm x 58mm
  • Compression Ratio: 6.6:1
  • Power Output: Approximately 11-13 hp @ 5,250 rpm
  • Transmission: 4-speed manual, chain drive
  • Ignition: Initially points ignition, later models used electronic ignition
  • Fuel System: Carburetor (varied by model and year)
  • Frame: Steel tubular
  • Suspension:
    • Front: Telescopic forks
    • Rear: Swingarm with twin shocks
  • Brakes: Drum brakes front and rear
  • Weight: Around 100 kg (220 lbs)
  • Top Speed: Approximately 90 km/h (56 mph)
  • Fuel Capacity: 12 liters (3.2 gallons)
  • Fuel Consumption: Approximately 3.5-4 liters per 100 km

Manufacturer Design

ČZ (Česká Zbrojovka Strakonice) has a rich history in manufacturing, originally starting as an armaments manufacturer. The company later diversified into producing motorcycles, bicycles, and automotive components. The design philosophy of ČZ motorcycles, including the 125cc models, emphasized reliability, ease of maintenance, and practicality, catering to both civilian and military use.

  • Engine Design: The two-stroke engine used in the CZ 125cc was designed for simplicity and ease of repair. The engine’s design allowed for a high power-to-weight ratio, which was essential for the performance of smaller displacement motorcycles.
  • Chassis and Suspension: The steel tubular frame provided a robust and durable structure, suitable for a variety of road conditions. The telescopic front forks and swingarm rear suspension with twin shocks were designed to offer a comfortable ride and good handling characteristics.


The CZ 125cc motorcycles hold a significant place in motorcycling history, especially in Eastern Europe. They were known for their robustness, affordability, and adaptability to different environments, making them popular among commuters, enthusiasts, and even racers.

  • Racing Success: ČZ motorcycles, including the 125cc models, achieved considerable success in motocross and enduro racing. This success helped to establish the brand’s reputation for producing reliable and competitive motorcycles.
  • Global Reach: The affordability and reliability of CZ 125cc motorcycles led to their widespread use in various countries, particularly in Eastern Europe and developing nations. They became a symbol of practical and accessible transportation.
  • Cultural Impact: In countries like the former Czechoslovakia, the CZ 125cc was not just a means of transportation but a part of everyday life, contributing to its cultural significance.

Interesting and Important Facts

  1. Military Use: The CZ 125cc was used by various military forces due to its rugged design and reliability. Its ability to handle rough terrain and ease of maintenance made it suitable for military applications.
  2. Innovative Features: Some models featured innovative design elements for their time, such as an integrated gearbox and engine unit, which simplified maintenance and repairs.
  3. Historical Context: The production of CZ motorcycles was influenced by the political and economic conditions of the time, particularly during the Cold War era. The brand managed to thrive despite these challenges, demonstrating resilience and adaptability.
  4. Classic Status: Today, the CZ 125cc models are considered classic motorcycles, cherished by collectors and vintage motorcycle enthusiasts. Their historical significance and distinctive design make them valuable pieces of motorcycle history.
  5. Community and Clubs: There are dedicated clubs and communities of CZ motorcycle enthusiasts around the world, highlighting the lasting legacy and ongoing interest in these iconic machines.

In summary, the CZ 125cc motorcycles are renowned for their reliability, robust design, and historical significance. They played an essential role in the development of affordable and practical two-wheeled transportation in the mid-20th century, leaving a lasting legacy in the world of motorcycling.


error: Content is protected !!