Back to Bike FinderYears: 1967 · 1966 · 1965 · 1964
Hercules K 103 GS
1967Sportbike

Hercules K 103 GS

Key specifications

Engine
97 cc
Power
8 HP
Weight
99 kg
Fuel type
petrol
Fuel capacity
3.4 L
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

The 1967 Hercules K 103 GS: A Classic Sport Bike from the Era of Innovation Step back into the vibrant landscape of the late 1960s, where the motorcycle market was abuzz with creativity and competition. Enter the 1967 Hercules K 103 GS, a striking sport bike that carved its niche among enthusiasts looking for an engaging riding experience without sacrificing style. With its lightweight frame, nimble handling, and spirited performance, the K 103 GS captured the hearts of riders eager to embrace the essence of sport motorcycling. This model stands as a testament to Hercules’ commitment to quality and performance, making it a cherished piece of two-wheeled history. At the heart of the K 103 GS lies a 97cc single-cylinder, two-stroke engine that churns out an impressive 8.2 horsepower at 6000 RPM. While these numbers may seem modest by today’s standards, the bike's lightweight chassis, tipping the scales at just 99 kg (218.3 pounds), allows it to reach a top speed of 95 km/h (59 mph) with surprising agility. The power-to-weight ratio of 0.0828 HP/kg ensures that riders experience a lively performance, making it perfect for zipping through urban streets or tackling winding roads. The air-cooled engine, paired with a Bing 22mm carburettor, delivers a responsive throttle that keeps the excitement alive at every twist of the wrist. The K 103 GS showcases several key features that enhance both performance and rider comfort. Its single cradle frame provides stability and confidence during spirited rides, while the drum brakes—both front and rear—offer reliable stopping power. The swingarm rear suspension contributes to a smooth ride, absorbing bumps in the road with grace. With a fuel capacity of 13 liters (3.43 gallons), the K 103 GS ensures that riders can venture out for extended journeys without frequent stops. The classic kick starter not only pays homage to the era's design but also adds a sense of connection between rider and machine as you prepare to hit the road. **

Pros

    Cons

    • Lightweight and Agile: At only 99 kg, the K 103 GS is easy to maneuver, making it ideal for both new and experienced riders.
    • Classic Design: The retro aesthetics appeal to collectors and enthusiasts who appreciate vintage motorcycles.
    • Engaging Ride: The lively two-stroke engine offers a thrilling experience, perfect for spirited rides around town or on twisty roads.
    • Limited Power: With just 8.2 HP, it may struggle to keep up with modern highway speeds, making it better suited for city riding.
    • Drum Brakes: While historically significant, drum brakes may not provide the same stopping performance as modern disc brakes, especially in emergency situations.
    • Kick Start Only: The absence of an electric starter can be a hassle for those used to the convenience of modern bikes, requiring a bit of skill and effort to get started.

    Technical details

    Source specification data

    Make
    Hercules
    Model
    K 103 GS
    Category
    Sport
    Starter
    Kick
    Power
    8.20 HP (6.0 kW)) @ 6000 RPM
    Top Speed
    95.0 km/h (59.0 mph)
    Fuel System
    Carburettor. Bing 22mm
    Bore X Stroke
    48.0 x 54.0 mm (1.9 x 2.1 inches)
    Displacement
    97.00 ccm (5.92 cubic inches)
    Cooling System
    Air
    Engine Details
    Single cylinder, two-stroke
    Transmission Type Final Drive
    Chain
    Dry Weight
    99.0 kg (218.3 pounds)
    Fuel Capacity
    13.00 litres (3.43 gallons)
    Power Weight Ratio
    0.0828 HP/kg
    Seat
    Dual
    Wheels
    Spoked
    Rear Tyre
    3.50-18
    Frame Type
    Single cradle
    Front Tyre
    3.50-18
    Rear Brakes
    Expanding brake (drum brake)
    Front Brakes
    Expanding brake (drum brake)
    Rear Suspension
    Swingarm