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defcon62 posted on r/powerwheelsmods2w
If you have a tractor supply local they usually have them in the hardware aisle in the drawers. They can also be had on Amazon. Shaft collars are a nice option as well if there is clearance to tighten them down. Car came out looking very nice! Fair warning don’t try to modify it with a higher voltage tool battery. This version of the mustang is a “smart drive” which will not accept more than 12v. Power wheel push nuts