12V Straight DC Motors with no gearing.
These are basic DC motors, just as the title declares. These are a straight DC motor with no gearbox whatsoever.
We offer these basic motors in assorted power ranges at 12VDC motors which are appropriate for our selection of DC Speed controllers.
Without gearing, these universal motors are made for scooters or e-bikes using belts and chains (with varying size sprockets) to create high torque or moderate torque with higher speeds!
While primarily designed for scooter or go-kart use, they are a popular range for hobbyists and inventors.
While these are low cost motors, there’s nothing cheap about the quality. They are simply just motors that are created in such large quantities that they can be 12v Motor produced with a minimal price point.
The are produced 
in bulk, so while its expensive to get changes made (quantity should be purchased) the stock motor is low cost due to its availability and widespread use.