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Hercules K 125 S
1974Classic

Hercules K 125 S

Key specifications

Engine
124 cc
Power
17 HP
Fuel type
petrol
Fuel capacity
2.9 L
Transmission
6-speed
Front brakes
Single disc
Rear brakes
Expanding brake

Overview

Introducing the 1974 Hercules K 125 S: A Classic Gem for Enthusiasts The 1974 Hercules K 125 S is a prime example of classic motorcycle engineering, appealing to both vintage enthusiasts and collectors alike. With its distinctive styling and robust performance, this motorcycle carved out a niche in the competitive landscape of the 1970s. Positioned as an entry-level model, the K 125 S offered an engaging blend of power and agility, making it a favorite among new riders and those looking for a lightweight commuter. Hercules, known for its innovative approach to two-stroke engines and reliable construction, produced a bike that not only stood out aesthetically but also delivered on the promise of performance. At the heart of the K 125 S lies a spirited single-cylinder, two-stroke engine, displacing 124cc and generating a peppy 17 horsepower at 7500 RPM. This powerplant, with its 11.8:1 compression ratio, is designed for spirited rides, allowing the bike to reach a top speed of 117 km/h (72.7 mph). The 6-speed gearbox offers smooth, precise shifts, enhancing the riding experience during both urban commutes and open road adventures. The air-cooled design keeps the engine running efficiently, while the lightweight frame, tipping the scales at just 122 kg (269 pounds), ensures nimble handling and maneuverability. Whether navigating through city streets or cruising along country roads, the K 125 S delivers an exhilarating ride that keeps enthusiasts coming back for more. The K 125 S is not only about performance; it's also packed with features that enhance the riding experience. The motorcycle boasts a single disc brake at the front, providing reliable stopping power, complemented by an expanding brake at the rear. Its compact size and 11-liter fuel tank ensure that riders can cover considerable distances without frequent stops for fuel. The balanced dimensions, combined with the bike's design, make it a comfortable ride for various body types, while retaining that classic motorcycle feel that many enthusiasts cherish. The K 125 S showcases the innovations of its time, making it a collectible piece of motorcycle history. **

Pros

    Cons

    • Lightweight and Agile: Weighing just 122 kg, the K 125 S is easy to handle, making it perfect for both experienced and new riders.
    • Distinctive Classic Style: The classic lines and vintage appeal make it a head-turner among motorcycle enthusiasts.
    • Responsive Two-Stroke Engine: The single-cylinder engine offers lively performance, especially in urban environments, allowing for quick acceleration and a fun ride.
    • Limited Power for Long Trips: While ideal for city commuting, the 17 HP may feel underpowered for extended highway rides.
    • Two-Stroke Maintenance: The two-stroke engine requires more frequent maintenance and attention compared to modern four-stroke counterparts.
    • Tight Fuel Capacity: With an 11-liter tank, fuel stops may be more frequent on long journeys, which could be a drawback for touring enthusiasts.

    Technical details

    Source specification data

    Make
    Hercules
    Model
    K 125 S
    Category
    Classic
    Power
    17.00 HP (12.4 kW)) @ 7500 RPM
    Gearbox
    6-speed
    Top Speed
    117.0 km/h (72.7 mph)
    Bore X Stroke
    54.0 x 54.0 mm (2.1 x 2.1 inches)
    Compression
    11.8:1
    Displacement
    124.00 ccm (7.57 cubic inches)
    Cooling System
    Air
    Engine Details
    Single cylinder, two-stroke
    Transmission Type Final Drive
    Chain
    Fuel Capacity
    11.00 litres (2.91 gallons)
    Weight Incl Oil Gas Etc
    122.0 kg (269.0 pounds)
    Rear Tyre
    3.00-17
    Front Tyre
    2.75-17
    Rear Brakes
    Expanding brake
    Front Brakes
    Single disc