| Model | MIG RK125WD |
| Bore | 53,70mm |
| Stroke | 54mm |
| Volume | 11,50cc |
| Compression ratio | 10,8:1 |
| Cylinder head | Aluminium water cooled |
| Connecting rod lenght | 100mm |
| Connecting rod material | Steel |
| Crankshaft bearing | 6205-C3 |
| Small end conrod bearing | 14mm / 39mm |
| Big end conrod bearing | 18mm / 45mm |
| Piston | 53,60 /54,25 |
| Crankshaft | 2 pieces CNC |
| Cylinder | Aluminium |
| Crankcase | Aluminium |
| Ignition | OPPAMA electric |
| Advance | 2,2 |
| Inlet | Reed valve |
| Carburettor | Dell'Orto 30mm |
| Cooling | Water |
| Mixture | 5% |
| Spark plug | ND27ESU /ND29ESZU / ND31ESZU |
| Clutch | Centrifugal |
| Weight | 10 Kg |
| RPM | MAX 15.000 RPM |
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