quick answer yes/no
long answer yes any 2006 and up brace will work. in the picture you can see a 2006 "Ss" swingarm (painted xb9 silver to match frame) with a graphite grey 2008 xbr swingarm brace.
the rear hugger is different on the "Ss" (see picture) but you can use the standard xbr/s rear fender but you can not use the belt guard.