i put s+s pipes on mine ,just the end cans , header pipes are now available for them now from s+s ,to be honest i think the stock exhaust sounds pretty good ,but the new pipes sound great i also changed the air filter i dont think i gained any power increase but the bike does fell a little more responsive at take off or maybe it just sounds better

theres a company in australia drag racing one they have a u tube channel ,,,,revelry racing worth a look tommy