Good day, Gentlemen.

I wish to recharge the rear shock on my ESA-equipped bike. I've pulled the rubber plug off the reservoir but what greets me is a bolt - not a schrader valve.

Does anyone know what size schrader valve I can use to replace the bolt and recharge my shock? Would it be a metric thread or SAE? As well, I need some guidance on what PSI to fill the reservoir. As a rule of thumb I'd guess 200 psi but its a BMW so that's probably wrong.

As always, your input / solutions / wisecracks are appreciated!