https://www.jnen.cn/product/engine/50cc-1p39qmb-scooter-engine.html

 

Nominal displacement:50ml
Displacement:49.4ml
Bore:39mm
Stroke:41.4mm
Compression ratio:10.5:1
Maximum power:2.7kw/7000r/min
Maximum torque:3.2N·m/5500r/min
Maximin fuel comsumption:≤367g/kW·h
Minimum stable idle speed:1700±100r/min