Base and S sprocket are 39 teeth and R has 41 so you'll need a new chain if you don't already have one unless you purchased an aftermarket sprocket but regardless, it'll fit.
I had the 41t on my previous 1199s. My Tricolore has the stock 39t sprocket and it feels sluggish in comparison in street riding. I have a 520 conversion with 41t sprocket for the Tricolore that is going on soon. My red 1199s with the 41t sprocket was "scary-fast." The Tricolore with the 39t sprocket is just "crazy-fast."