This is the powertrain from a hoverboard (minus the battery) with the bipropellant firmware flashed onto it. This gives you two powerful motors that you can control from another microcontroller over uart, or from an analog input like an analog joystick.

You get two hub motors (which are a motor, wheel and tire), a frame to mount them to, mounting hardware, and one control board with the bipropellant firmware flashed into it.

You need to add your own battery pack, but it has a standard XT-60 connector and will take any 10S2P lithium ion pack. At the time that I'm writing this these packs run around $25 on aliexpress.

These are used parts but they have all been tested by me and are known to work.

These things are great for projects that need to haul around more than a few tens of pounds of weight. From powered lawn carts to bobbycars to DIY e-bikes to homemade mars rovers.