As some of you know, there was a clutch change that I believe occurred after the 2009 model year. Suzuki went from a 5 disk setup to a 6 disk setup with longer springs. After a bit of research, I have discovered that all models from 06-20 use the same clutch plate. The difference in thickness is actually found on the smooth metal plates and not the friction parts. Here are pictures. One other thing I found is that the new clutch plates do not have staggered pads like the original plates from my 2012. PSS. Sorry about the sideways pictures.
Here are the parts
Driven plate - bare metal. These are the ones that should be thicker on the pre 2010 models.
If you want to upgrade to a 6 disk clutch, you need 1 additional clutch plate, the longer springs, and the new thinner driven gears which is pictured above. PS. I did not replace the bare metal driven gears so they are not in my parts list.