With it being winter where i live i was sick of getting mud in the bottom of my motors after even the smallest of stacks. I wanted to design something light and simple that would work as a guard to protect motors from getting dirt/mud in them on a tumble. These simple motor guards protect the bottom of the motor from mud and also the bell from impacts. They will break on hard impact but better them then a motor. They are working well for me now after making them smaller and closer to the motor bell. Designed for the ZMR250 they with suit 220x motors and have 19 and 16mm mounting holes. *Fixed motor hole alignment, please re-download