Does anyone know what nitrogen pressure should be in a PS 420 shock? PSI = ?
Like DM said, pre-charged from the factory.
That said, I have one on my '94, maybe 120k miles on it, rebuilt once by Progressive a couple of years back. The rebuild price was *VERY* reasonable, and they have all the tools, tanks, instruments, Faerie Dust, and a method for jamming ?? PSI of nitrogen into the shock before shipping it back to the customer. I highly recommend them.
Rick