[Blacdout96]

Anything can go bad, but stainless steel aren't as easy to make go bad as compared to an ordinary line. I still recommend changing to the correct master cylinder and prop valve, you won't hear the passenger side as well as the driver since it's closer to yoy. If your worried, first inspect te caliper and caliper piston and see if there is build up on it. I'd still purchase a caliper rebuild kit jut I case any bad seals break while inspecting.