| Engine name | CB250 | CB300 |
| version | Single-cylinder,four-valve, four- stroke, liquid-cooled | Single-cylinder,four-valve, four- stroke, liquid-cooled |
| Bore X stroke | 70 X 65 | 76 X 65 |
| Ignition method | CDI 、ECU | CDI 、ECU |
| Lubrication method | Pressure, splash compound | Pressure, splash compound |
| Startup mode | Pure electric | Pure electric |
| Variable speed mode | Five-gear / Sixth-gear international gear | Five-gear / Sixth-gear international gear |
| Maximum net power | 18.0KW/8500 | 22.0KW/7800 |
| Maximum torque | 22.0N.m/6500 | 30.0N.m/6000 |
