Jawa 50/05 Specifications (Czechoslovakia)

Motor Type2-stroke, air-cooled
Number of Cylinders1
Bore Diameter38 mm
Piston Stroke44 mm
Engine Displacement49.9 cc
Compression Ratio1:7.5
Max Engine Power3 hp at 6000 rpm
Max Noise Level75 dB
Fuel Tank Capacity5.51 liters
Max Speed (with 80 kg load)60 km/h
Max Gradeability (with 160 kg)16%
Dry Weight65 kg
Payload160 kg
Front Axle Load62 kg
Rear Axle Load168 kg
Primary TransmissionCZ-Favorit chain, 3/8″ x 3/8″, 44 links
Secondary TransmissionChain 12.7 x 5.2, 109 links
Gear RatiosSee below
Overall Gear Ratios (I, II, III)See below

Gear Ratios:

  • Primary Transmission Ratios:
    • 1st: 1:2.43 (14/34 teeth)
    • 2nd: 1:2.94 (14/24 x 14/24 teeth)
    • 3rd: 1:1.54 (20/18 x 14/24 teeth)
    • Direct: 1:1
  • Secondary Transmission Ratios:
    • 1st: 1:4.23 (13/55 teeth)
    • 2nd: 1:4.58 (12/55 teeth)

Overall Gear Ratios:

  • 1st Gear: 1:30.22 or 1:32.70 (depends on secondary gear)
  • 2nd Gear: 1:15.86 or 1:17.18 (depends on secondary gear)
  • 3rd Gear: 1:10.28 or 1:11.13 (depends on secondary gear)

The bike typically comes with a 13-tooth secondary gear suitable for single-person riding and a 12-tooth gear recommended for hilly terrain.


  1. Fuel Efficiency: Known for exceptional fuel economy, ideal for commuting and daily use.
  2. Lightweight: Easy to handle due to its light build, making it maneuverable in urban settings.
  3. Reliability: Simple design contributes to its reliability and ease of maintenance.
  4. Affordability: Generally offered at an affordable price point, making it accessible to many.
  5. Good Load Capacity: Despite its size, it can handle a considerable payload for its class.


  1. Limited Speed: Relatively low top speed might not suit highway riding or longer distances.
  2. Minimal Power: Its engine, while efficient, lacks the power for more demanding terrains or heavy loads.
  3. Basic Features: Lack of advanced features or modern amenities found in newer models.
  4. Spare Parts Availability: Might face challenges in finding specific parts due to its age and rarity.
  5. Comfort: Being a small moped, it might not offer the comfort expected for longer rides.

The Jawa 50/05, though efficient and reliable for daily use, comes with limitations in power and speed, suited primarily for short-distance commuting within urban areas.

The Jawa 50/05 holds a distinctive position in the annals of motorcycle history as an iconic symbol of utilitarian transport. Introduced in the early 1960s, this diminutive yet resilient 2-stroke moped emerged as a reliable and economical choice for urban commuters in various regions. Its introduction marked an era where practicality and efficiency took precedence, offering a simple yet robust design tailored for daily mobility needs. Revered for its remarkable fuel efficiency, lightweight build, and commendable load capacity, the Jawa 50/05 became a favored companion for countless riders navigating bustling cityscapes. Its historical significance lies in embodying an era where practical, affordable, and dependable transportation solutions were paramount, leaving an enduring imprint in the motorcycle heritage as a quintessential urban workhorse.

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