Anyone know the spring rate on the sach rear shock? It also  looks like a progressive rate spring, I'd like to go linear rate and little stiffer, btw it looks like most aftermarket springs are linear rate.
TIA, Dani

What do you weigh?

Pfft... You and your big brain... 

Um... Thanks. 

Thanks Mickey thats awesome, where did you find that? I weigh 180 w/o gear and do some 2 up riding, looks like the 11 spring will work. Will a revalve be required going up one step in spring stifness? Is that rate in n-M or what?
TIA, Dani

i think those rates are in kg/mm.

notice that it says nothing about the OEM spring rate. So until you know that, and how far that is from the spring you want, you wont know if you need to revalve or not.

That's from Ducati Up North's site.  They have some nice tech articles posted.  (http://www.ducati-upnorth.com)

The rates are Nm, which is roughly 10x the rate in Kg/mm.  On the site you can find another chart that shows Nm rates with the equivalent rate in Kg/mm and Lb/in.

You will probably be fine without a re-valve, since the stock shock is over-damped to begin with.  (And the stock spring is definitely lighter, although I'm not sure how much.)  For it to be perfect, I don't doubt a re-valve would help, but the Sachs isn't worth much so it's definitely not worth the expense ... and that's if you could find somebody who would do it.  The spring can be moved to a better shock, if you find the Sachs isn't up to the task.