They work for 6t,7t,8t pinion gears which is what you will run if you have a stock motor. For 6t/7t pinion gears, fold up a small piece of paper a slot it between the clip and the motor. You will still need your other motor spacers on the axle side of the motor mount.
I have two of them and they worked for me with no issues otherwise save up a little more and get an alloy motor mount because the stock clips will break again.
