550 15000RPM Gearbox with 12V Motor,Electric Motor with Gear Box for Kids Electric Cars RC Car and Motorcycles Universal RS550 Drive Engine Match

The FULIHUA 550 15000RPM Gearbox with 12V Motor has received mixed reviews from customers. While some have found it to be a decent improvement for their kids' electric cars and motorcycles, others have experienced issues with the product. One customer mentioned that the gears in the gearbox are cheap plastic instead of the promised intermediate metal gears, which led to them being disappointed with the product. Another customer stated that the motors burnt out within 15 minutes of use, suggesting that they may not be suitable for driving on grass. On a positive note, one customer shared that they installed two of these motors in their daughter's BMW X6 and found that it worked much better with the added power. They also made modifications, such as removing the metal sleeve and using a higher voltage battery, to increase the RPM and torque output. According to this customer, the motors have not overheated and the gearboxes have not stripped after a month of use. However, another customer reported that the metal gear pins overheated and melted the plastic receptors within weeks of installation. They attempted to fix the issue by installing metal cups for the pins and working on the melted plastic, but it did not solve the problem. Overall, the FULIHUA 550 15000RPM Gearbox with 12V Motor has a mixed reception. It may provide improvements in performance if used properly and with appropriate modifications, but there is a risk of the gears overheating and failing.