I did not get one with my 2010 "S"
I find that a large pair of Channel locks works just as god or better than the spanner wrench.
The spanner wrench that came with my sons Banshee fits the RZR springs-go figure.
I have one from MATCO tools which is a lot heavier duty (a little pricey) it is much easier on your fingers than the stamped steel factory one that came with my RZR.