| Stroke | 4 Stroke |
| Cold Style | Air-Cooled |
| Start | Electric / Kick |
| Cylinder NO. | 1 Cylinder |
| Ignition Method | CDI |
| Displacement (ml) | 125cc |
| Place of Origin | China |
| Brand Name | JINLANG |
| Model Number | J20 |
scooter engine 50cc, 80cc, 100cc, 125cc, 150cc, 200cc, 250cc and 300cc
| parameters | ||||||||
| 50cc 4 stroke | ||||||||
| Model No. | J20 | |||||||
| Type | Single cylinder,4-storke,forced air-cooled | |||||||
| Bore | 52.4mm | |||||||
| Stroke | 57.8mm | |||||||
| Displacement | 125ml | |||||||
| Compression ratio | 9.5:1 | |||||||
| Max power | 6.5kw/7500rpm | |||||||
| Max torque | 8.6N.m/6500rpm | |||||||
| Min idling speed | 1600r/min | |||||||
| Shaft length | 195mm/130mm | |||||||
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