This gear case with motor is perfect for electric battery bikes and kids ride on cars.

It's made with metal and plastic, and has a voltage of 12V.

The 550 motor is 5.7cm long, 3.5cm in diameter, and has a gear box length of 18.5cm.

The aperture is 1.2cm.

The 390 motor is 4.6cm long, 2.75cm in diameter, and has a gear box length of 16.5cm.

The aperture is 1cm.

380 and 390 are universal, and 550 and 540 are universal.

Note that the speed is faster and the torque is smaller.

In turn, the speed is slower and the torque is greater.

The power and torque for 550 is 30000>23000>18000>15000>10000, and the torque is 10000>15000>18000>23000>30000.

We usually recommend guests to choose 550 12V 23000rpm motor.

This package includes 1X Gear Case with Motor.

Description:

Material:Metal and plastic

Voltage:12V

Used For:Kids Children Ride On Car/electric battery bikes

550 motor: Length: 5.7cm;Diameter: 3.5cm;Gear box length:18.5cm;aperture:1.2cm

390 motor: Length: 4.6cm Diameter: 2.75cm;Gear box length:16.5cm;aperture:1cm

380 and 390 are universal

550 and 540 are universal

Note:
The speed faster and the torque smaller, In turn,The speed slower and the torque greater