I just picked up a 1993 KHS that had these on. Knowing they certainly weren't standard I assumed they we're semi-modern trash, but a few searches suggest they are 1993 and a really early air shock from the era of elastomers. Anybody have much information about them, I don't recall them being popular at the time? Where there any earlier air shock forks than 1993? Trying to decide whether to keep them or move them on.