putting an arm on a 600 is the equivalent of putting wheelie bars on a V6 mustang

its really expensive, unnecessary, will destroy the handling and rideability of the bike, probably void a good bit of your warranty, and i can guarantee alot of people will be laughing at you... not trying to be harsh just trying to keep you from spending money on something you might regret, if your into drag racing i'd get an exhaust, air filter, shifter, lower it, and learn how to go really fast on it stock wheelbase first... but ultimately its your bike and your money and if thats whats going to make you happy don't let any of us stop you, right now i have no idea where you'd find an arm for a new 600 though to answer the original question

parts are just starting to slowly become available for it, you should see alot more stuff in the near future coming on the market