Dimension:640x370x280 This type of engine has general crankcase and lengthening crankcase available.

Type	Single cylinder\2-strokes\forced air-cooled
Cylinder(mm)	40
Piston displacement(mm)	39.2
Displacement(ml)	49.3
Max power(km/rpm)	3.4/7500
Max Torque(N.m/rpm)	4.1/6500
Idle(r/min)	1800

Scooter Engine(JL1PE40QMB)