Naked Motorcycles
1991Hercules K 180 Military
18 fields on record
The 1991 Hercules K 180 Military is a lightweight, utilitarian two-stroke motorcycle designed for practical riders seeking economical commuting and off-road capability. Its modest 178cc single-cylinder engine delivers 17 horsepower and a top speed of 110 km/h, prioritizing reliability and fuel efficiency over performance. Best known for its rugged construction and versatile character, it suits budget-conscious riders and military applications requiring dependable, low-maintenance transportation.
- Capacity
- 178.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 5-speed
- Wet weight
- 135.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 17.0 HP (12.5 kW) @ 5500 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Originally built as a military utility motorcycle, it is best suited to basic transport, light off-road use, and simple point-to-point riding rather than performance or long-distance touring.
- Built for
- It has a rugged, no-frills, functional character typical of old-school military and utility bikes, prioritizing simplicity and durability over speed or comfort.
- Not ideal for
- It is not suited for riders seeking high speed, long-distance touring comfort, or passenger carrying capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 178.0 ccm
- Power
- 17.0 HP (12.5 kW) @ 5500 RPM
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1259 HP/kg (wet)
- Bore x stroke
- 61.0 x 61.0 mm
- Compression
- 10.8:1
- Cooling system
- Air
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 110.0 km/h (68.4 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Expanding brake
- Rear brakes
- Expanding brake
- Front tyre
- 3.25-18
- Rear tyre
- 3.25-18
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the Hercules K 180 Military?
The 1991 Hercules K 180 Military has a Capacity of 178.0 ccm (10.86 cubic inches).
What engine power does the Hercules K 180 Military have?
The 1991 Hercules K 180 Military has a Power of 17.0 HP (12.5 kW) @ 5500 RPM.
How many gears does the Hercules K 180 Military have?
The 1991 Hercules K 180 Military has a Gearbox of 5-speed.
How much does the Hercules K 180 Military weigh?
The 1991 Hercules K 180 Military has a Wet weight of 135.0 kg (297.6 pounds).
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