Ive been trying to find more info on guys running a stock primary with a clutch kit and a stm secondary and how its performing vs a full stm setup, QSC/STM set up, and any other aftermarket primary. I am running all stock still and am wanting to upgrade soon. From what ive read some guys racing and other guys running the hell out of them are having the aftermarket primarys coming apart. Thats why some maverick running the baja and other long races like that are running stock primarys. I know its not going to be the same performance as a full setup but its got to be close. How come the aftermarket primarys arent holding up to the extreme conditions and heat like the stock? Just want to get it all figured out before i dump a bunch of money into clutches. And if there is a cheaper way to get the best performing clutch i can id like to know.