I beg to differ 46U unless I misunderstood you, the bushings that came with GPM's "C" hubs are white nylon plastic. At least the ones I recieved, in any case yes I'm sure they won't hold up as well as billet but hey for $20 ("C" hubs/ front knuckles) I'm not gonna complain. Plan on runnin' mostly on asphalt and hopefully not hit anything.