Scooter-Engine/1P39QMB
Single-cylinder,four-stroke,forced air-cooled electric/kick start 50cc
SPECIFICATION
Displacement: 49.5ml
Compression ratio: 10.5:1
Primary reduction: 0.8—2.4

Scooter-Engine/1P52QMI
Single-cylinder,four-stroke,forced air-cooled electric/kick start 125cc/150cc
SPECIFICATION
Model:1P52QMI
Displacement:124.65ml
Compression ratio: 9.2:1
Primary reduction: 2.65—0.8