What mini truggy? Is it 4wd? Is it 1/10? What does it weigh? The recommended motor for the ET410.2 is 4000-4600kv. Sure, you can run motors outside the optimal range for any given RC with proper gearing, but why? All you're going to be doing is run the motor at higher RPM's because you had to...
Get an infrared temp gun and check your temps of motor and ESC. You're probably cooking your motor. The kv of that motor is really too high for that truck.