| Attribute | KTM 125 RS 1978 × | MV Agusta 125 SS × |
|---|---|---|
| General | ||
| Production from (year) | 1978 | 1978 |
| Make | KTM | MV Agusta |
| Model | KTM 125 RS | MV Agusta 125 SS |
| Category | Cross / motocross | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Valves per cylinder | - | 2 |
| Displacement (cm³) | 124 | 123 |
| Power (kw) | 12.4 | 10.2 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 54 | 53 |
| Stroke (mm) | 54 | 56 |
| Gearbox | 6-speed | 5-speed |
| Fuel control | Port control | Overhead Valves (OHV) |
| Compression | 11.8:1 | 10.0:1 |
| Chassis | ||
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Expanding brake |
| Front tyre | 2.75-17 | 2.75-18 |
| Rear tyre | 3.00-17 | 3.00-18 |
| Dimensions | ||
| Kerb weight (kg) | 111 | 108 |
| Performance | ||
| Top speed (km/h) | 120 | 120 |
| Fuel capacity (l) | 12 | 14 |