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| 49CC GY6 EFI Engine | 125CC GY7 EFI Engine | |||
| Engine model | JJ1P39QMB | JJ1P52QMI | ||
| Engine type | single cylinder, 4 stroke, forced air cooling | single cylinder, 4 stroke, forced air cooling, | ||
| Displacement | 49ml | 124.6ml | ||
| Bore x stroke | 39x41.5 mm | 52.4x 57.8 mm | ||
| Compression ratio | 10.5:1 | 10.5:1 | ||
| Max power | 2.5kW/7500rpm | 6.2kW/7500rpm | ||
| Max torque | 3.0N.m/5500rpm | 8.7N.m/6000rpm | ||
| Idle Speed | 1600 r/min | 1600 r/min | ||
| Economical oil consumption(L/100km) | 2.3L | 2.6L | ||
| Fuel supply | EFI | EFI | ||
| Ignition | ECU | ECU | ||
| Starting | electric/kick | electric/kick | ||
| Drive system | Belt drive | Belt drive | ||
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