jiaruixin 24V550 18000RPM Gearbox with 24V DC Motor for Kids Ride on Car SUV Parts, Electric Motor with Gear Box RS550 24 Volt Motor Match Children Ride on Toys Accessories, Multicolor

Good product.

Been running these at closer to 30 volts for a year now. Connected to a cheap ebike speed controller on my sons Jeep. The thing pops wheelies and the motors barely get warm to the touch. I did have to replace one after about a year, but these have taken a lot of abuse, and Ive run them above the spec'd voltage the entire time so I really cant complain. And for the money, I can't complain.

My kid has been driving with this motor for 2 hours straight and the motor has good power and very strong I even hoped on it for a bit and I'm 185 pounds

Used two on a 12V to 24V upgrade for a Best Choice Products Jeep (comes stock with a 9k rpm gearbox and 12v motor) - easily moving along at 6 to 7 mph now on a solid surface. Edit: after 2 hours of use, the final drive gears on both beveled out to the point where they won't engage with any resistance from the tire. You can see the secondary gear doesn't fully engage with the final drive gear, so any torque that's applied over time will cause beveled, uneven wear to the point of failure. Looks like a series of washers on the final drive gear may give it enough offset to reduce failure.

Bought 2 and installed one of them due to waiting on building a bracket for the 2nd motor. This 1 motor can handle 2 kids and initially it was being used for at least 30 minutes going back and forth. The 20V 5Ah battery still had a full charge.