AI
Hercules
K 50
Classic · 49 cc
- Engine
- 49 cc
- Power
- 5 hp
- Weight
- 80 kg
This text was partly made with AI and may contain errors.
What should you pay for a K 50?
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Model family
K 50 at a glance
Quick reference values. Model year, generation and trim can differ.
Displacement
49 cc
Power
5 hp · 4 kW
Category
Classic
Specifications
- Displacement
- 49 cc
- Power
- 5 hp · 4 kW
- Weight
- 80 kg
- Fuel capacity
- 13 l
- Production
- 1963 – 1970
- Category
- Classic
Comparable models
Also worth considering
Models in the same category and price range to consider alongside the K 50.
Generations and editions
Features and handling differ by generation. Use this overview to find the right version.
1 variants
Years
1963 - 1970
1963–1970 K 50
GenerationThe early K 50 has an air-cooled 50cc Sachs two-stroke, five speeds and full-swing chassis. Later Ultra variants belong in a different row only after identification.
49 cc5 hp
About this model
About the Hercules K 50
The Hercules K 50 is an early German lightweight motorcycle introduced late in 1963. The original series uses an air-cooled Sachs 50cc two-stroke, five speeds and a full-swing chassis; output rose in 1964 from about 4.5 to 5.2hp. It is not the same as the later K 50 Ultra or Ultra 50, so type plate and frame number are necessary for a correct restoration.
For a buyer, the complete original drivetrain matters more than shiny paint. Inspect engine, five-speed gearbox, chain, brakes and specific chassis details for wear or incorrectly fitted later parts. A documented early K 50 with the correct Sachs engine is the best basis. Always test cold starting and shifting; a poorly running two-stroke can hide simple adjustment or a full rebuild.
- Category
- Classic
- Production
- 1963 – 1970
- Power
- 5 hp
- Weight
- 80 kg
Before you buy
What to check before buying
- Verify type plate, frame number and early K 50 versus K 50 Ultra/Ultra 50 before assigning parts or year.
- Check the 50cc Sachs two-stroke for compression, crank seals, carburettor, air filter and correct premix.
- Test five-speed gearbox, clutch, chain and sprockets under load for jumping gears, slip and incorrect gearing.
- Check ignition, charging and wiring for corrosion, wrong coils and incorrect 6V conversion.
- Inspect full-swing chassis, fork, brakes, wheels, tank and exhaust for corrosion, cracks and later mismatched parts.