I have no clue. I've had it pinned at a buck 20 and the car was climbing past 5000 with a bit of room to spare. Just from tone alone I think the motor has held 5200 rpm during burnout at 3/4 throttle. In some other chat threads I've seen some smarter people than myself calculate the absolute MAX rpm for a stock teen' to be 6200+ but of course that's if I were to melt the pistons or send a rod haha!