You mean SS Brake hoses? Interesting question. A guy would think if they were
really superior or needed on DD or heavy trucks, or lasted longer, Ram would have installed them ...or Ford/GM/Toyota, etc in heavy-duty applications. But they don't. They don't even use SS braided brake hoses on the Ram TRX, or the Raptor (from what I can tell). If there were ever rigs you'd think could benefit from SS braided hoses, it would be these. Sure a race car that goes around a track for 2 hours uses them, that kind of makes sense.
That gets me wondering ...if they don't use them on certain rough-service vehicles, perhaps there's an engineering weakness using SS braided hose over standard rubber (??). After all SS hose prices are fairly inexpensive. This article explains a few of the plusses and minuses. But install what you want:
Braided stainless steel brake lines are a common modification for racers and track-day aficionados. But for those driving on the street, you might be better off sticking with rubber ones.
www.motorbiscuit.com
TRX Brake: