Does anyone know what the "stock" spring rate is on the Bilstein PSS10s?

Looking to change to 60MM linear Swift Springs, and want to see what rate I should be looking for.

Also, does anyone know how aggressive of a spring the stock PSS10 valving can take? Say, if the spring rate is 200lb/in, and I push it up to 300, will it need to be re-valved.

Is there a general "If you increase be XXXlb/in....you need to re-valve?"


I'm trying to build something comparable to the WMW KW V2 set up (which I considered buying, but he wouldn't tell me the spring rate, and I'm not about to drop $2k on mystery springs) with the bottom adjustability of the Bilsteins.

Any and all help is appreciated.