| Attribute | Jawa Californian 250 1967 × | Simson 425 T 1960 × |
|---|---|---|
| General | ||
| Production from (year) | 1967 | 1960 |
| Make | Jawa | Simson |
| Model | Jawa Californian 250 | Simson 425 T |
| Category | Sport | Allround |
| Engine and transmission | ||
| Engine type | Twin, two-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 248 | 247 |
| Power (kw) | 11.7 | 8.8 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Shaft drive (cardan) |
| Bore (mm) | 75 | 68 |
| Stroke (mm) | 65 | 68 |
| Ignition | - | Magneto |
| Compression | 8.0:1 | - |
| Chassis | ||
| Front suspension | Telescopic | - |
| Rear suspension | Swingarm | - |
| Front brakes | - | Expanding brake (drum brake) |
| Rear brakes | - | Expanding brake (drum brake) |
| Frame type | - | Steel |
| Front tyre | 3.25-19 | 3.25-19 |
| Rear tyre | 3.25-19 | 3.25-19 |
| Seat | Dual | Single |
| Wheels | Spoked | Spoked |
| Dimensions | ||
| Dry weight (kg) | 128 | 140 |
| Power/weight ratio | 0.0914 | 0.0629 |
| Performance | ||
| Top speed (km/h) | 110 | 100 |