I am new to the world of four wheelers but what is the difference in set ups between these two machines? The 450HO is mine and my brother owns the 570 with engine braking plus PS. Its the same engine, so why the difference in hp? What can I do to get the extra 13 hp? We recently rode Prentice Cooper State Forest near Chattanooga and had a great time. I could do everything that he could do. No complaints what so ever. Just wondering what makes them tick.
