In the EV industry, there are two main choices when it comes to motors. And it's important to understand both. The differences between an
AC drive system and a DC drive system are significant. However each has it's own place.

AC 3 Phase Brushless Traction Drives
AC Drive systems use three phase power and require a special 3 phase controller to match. Although these systems can be twice what a
DC drive system costs, they are much more efficient, often have higher torque for direct drive applications and last longer without maintenance.
This mean that you get more range, more power and more life out of your EV. You also often can bolt them directly up where the old
transmission was and couple them to your stock drive shaft. Meaning no adapter plates or shifting. However it raises the cost of a
conversion considerably. AC drive systems are often considered "high end" conversions due to the price. But if it can be fit into your budget,
it is a far more efficient and reliable system.

DC Brushed Drive Systems
DC motors can include a variety of widely used motors from permanent magnet to series wound. Not all motors are created equal though.
Due to the lower inherent efficiency of DC motors, some are better than others. Many other components come into play such as bearings,
insulation grades, shaft materials, windings, timing, etc. This can be intimidating to a DIY EVer which is where NetGain come in.
Netgain has developed a line up of DC motors to simplify conversions for DIYers and quickly grew to become the worlds leading
DC motor conversion supplier. Their motors have been used in almost every DC conversion on the net and their quality is second to none.
When using a their high quality DC motors, you know you are getting the most efficient and powerful DC motors on the market. Their motors are also competitively priced. And almost 1/2 the cost of using an AC system.