| MODEL | ZUNDAPP KS 125 SPORT 1974 |
| Year | 1974 |
| Engine Type | Single-cylinder, two-stroke |
| Displacement / Capacity | 124 cc / 7.57 cu in |
| Bore X Stroke | 54.0 x 54.0 mm / 2.1 x 2.1 in |
| Compression Ratio | 12.0:1 |
| Cooling System | Air |
| Max Power | 12.4 kW / 17 hp @ 7600 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | Port control |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 116 kg / 255.7 lb |
| WHEEL SPECS | |
| Front Tyre | 2.75-18 |
| Rear Tyre | 3.25-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 14 Litres / 3.7 US gal |
| Fuel Consumption | — |
| Top Speed | 125 km/h / 77.7 mph |
The KS 125 Sport was Zundapp's air-cooled 125 cc sports two-stroke of the mid-1970s, a favourite of young riders of the day. It paired a high-compression single with a five-speed box and drum brakes at both ends.
