Darda Replacement Motor

If you own a Darda set and the car seems sluggish, won't wind, or can't make it around the loops, you probably just need a replacement motor for your car. We change ours in the store every few months. There are two different kinds of motors - the standard motor and the "stop and go" motor. Although both motors are shown in the image, price is for one motor only. Please specify. Ages 4 and up By Darda