| MODEL | ZUNDAPP KS 125 SPORT 1971 |
| Year | 1971 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 124 cc / 7.57 cu in |
| Bore X Stroke | 54 x 54 mm / 2.1 x 2.1 in |
| Compression Ratio | 11.0:1 |
| Cooling System | Air |
| Max Power | 15 hp / 10.9 kW @ 7500 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 | Expanding brake (drum) |
| Rear Brakes | Expanding brake (drum) |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 110 kg / 242.5 lb |
| WHEEL SPECS | |
| Front Tyre | 2.75-18 |
| Rear Tyre | 3.25-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 12 Litres / 3.17 US gal |
| Fuel Consumption | — |
| Top Speed | 120 km/h / 74.6 mph |
Air-cooled 125 cc two-stroke sports roadster from Zundapp, with a five-speed gearbox and drum brakes. The first of the three listed model years, it is the mildest in tune of the three.
