Motor brakes do work but I am missing the rear bias in the turns. It depends on how the truck is set up to handle. I am waiting (still) on a flawed React to get sent back to me. Once I have I am going to pursue a combo of mechanical rear brake and motor braking on the front. I will have a quick key set up to cancel the rear brake so I can still have reverse. I will let you know how it goes.........the layout is posted in my BL CRT conversion thread in this truggy forum.